baber/WOPTO huggingface dataset:
Patent GB-351710-A (GB)
Title: Improvements in or relating to x-ray apparatus
IPC: H05G1/18
Filed: 1930-05-31
Abstract: 351,710. R÷ntgen-ray apparatus. SCHALL, W. E. and SCHALL & SON, Ltd., 75, New Cavendish Street, London. May 31, 1930, No. 16909. [Class 98 (i).] In apparatus for supplying uni-directional high tension current to a R÷ntgen-ray tube from a source of three-phase alternating current, each section 1, 2, 3 of the secondary winding of a threephase star-connected transformer is connected in series with a rectifying valve 8 and one terminal 11 of the ray-tube, the other terminal 5 of which is connected to the junction of the sections. The valves and ray-tube may be arranged as shown, or reversed. Heating current for the ray-tube cathode 5 is supplied by a transformer 14, and heating current for the valve cathodes 9 is supplied through rheostats 13 from a single transformer 12 or from separate transformers. The system effects half-wave rectification of the supply. Reference is made to a known system, employing a star-connected transformer and six valves, which effects full-wave rectification of the supply.
Patent GB-204110-A (GB)
Title: Improvements in or relating to the manufacture of steel
IPC: C21C7/00
Filed: 1922-06-19
Abstract: 204,110. Hadfield, Sir R. A. June 19, 1922. Alloys.-In the manufacture of flawless alloy steel, molten refined alloy or carbon steel or pure ingot or wrought iron is heated in a basic electric furnace, which is maintained in a sealed condition during the process, in the presence of a deoxidant other than carbon, such as ferro-silicon, or ferro-silicon and ferro-chromium and a slag forming material, and also carbon if desired. After heating for a considerable time, part of the slag is removed and a, deoxidant with other materials to form a reducing and refining slag is added and the heating continued until the molten metal has attained the desired degree of purity as regards sulphur and phosphorus. The additions to give the desired composition of the molten metal are then added and the resulting metal tapped, a small quantity of aluminium being added, if necessary, before or after the metal is tapped, or both. To cause a slow boiling of the metal bath in order to reduce the percentage of carbon to the desired degree, an oxidant, in small quantities at a time, may be added to the bath before adding the materials to produce the reducing and refining slag. To produce flawless nickel chromium steel, the charge comprises pure iron or pure iron and nickel or refined nickel chromium steel or refined nickel steel and nickel chromium steel with ferrochrome, carbon, ferro-silicon and lime. The refined steel used may be of the kind described in Specifications 142,885, 164,394, and 164,395, and the pure wrought iron may be of the kind known as Swedesh wrought iron.
Patent GB-302552-A (GB)
Title: Improvements in hangars of airships
IPC: E04G23/06
Filed: 1928-06-13
Abstract: 302,552. Krell, O. June 13, 1928. Axle-trucks and bogies. - Large platforms for hangars for airships are mounted on trucks with hydraulic gear intermediate of the platform and bogie and, to allow for unevennesses in the track, the hydraulic arrangements for all the bogies are -connected together and to a common pressure chamber. For a longitudinal movement of the hangars single-line wheel bogies 7 are connected to pistons 6 working in cylinders 5 carried by plates 4 which support the hangar. The limiting movements of the piston in the cylinder are by a lever 8 and cock 1. For double-line bogies, the bogie 14 is connected by rotatable pins 18 and axles 17 to the wheel frames and the piston 12 and cylinder 11 of the hydraulic connection are rounded and seat in rounded sockets on the bogie frame 14 and bedplates 10 respectively, thus allowing free motion without strain to the hydraulic connection. To allow of lateral movement of the hangar bedplates 24, these are supported on balls or rollers 23 carried in pivoted cups on the bogie frames which have lateral arms 21 and ball and socket connections 25 to the wheeled frames 26, Fig. 5. For rotatable hangars, the bogie frames have ball and socket connections 27 to the pins 18 projecting from the supports for the hangar platform, thus allowing free motion around curves.
Patent GB-912990-A (GB)
Title: Synchronous induction motor speed control
Inventor: DAVIS REX MOUNTFORD
IPC: B60L50/13
Filed: 1960-05-14
Abstract: 912,990. Control of A.C. motors. BRUSH ELECTRICAL ENGINEERING CO. Ltd. May 10, 1961 [May 14, 1960], No. 17109/60. Class 38 (3). At speeds below synchronous, a motor 9, e.g. in a locomotive, operates as an induction motor and has A.C. from a source 1, e.g. an enginedriven alternator, applied to its rotor 8 while its stator 7 is connected to a rectifier 6, followed by an inverter 4 by means of which slip energy is fed back to the source 1. In this condition the speed is controlled by adjustment of the firing angle of the inverter. For higher speeds, switches 3a and 3b change-over to connect the rotor to a D.C. supply 2 while the stator is supplied from the inverter, the rectifier 6 now being connected to the A.C. source 1. Due to the alternating e.m.f. induced in the stator by the rotor the inverter becomes selfcommutating so that the frequency of its output corresponds to the speed of the motor. The motor is thus now operating as a synchronous motor with the rectifier-inverter combination forming a frequency changer to step up the supply frequency to any desired value within the limitations of the motor and the inverter. The speed is now adjusted either by varying the D.C. supply to the inverter 4, giving a constant torque characteristic, or, for constant horse-power, by varying the D.C. excitation of the motor. The inverter can be a mercury arc or a solid state, controlled rectifier. The roles of the stator and rotor of the motor may be transposed.
Patent GB-111526-A (GB)
Title: Improvements in or relating to Revolvers and the like.
Inventor: PRITCHARD ARTHUR
IPC: F41C27/18
Filed: 1916-11-29
Abstract: 111,526. Pritchard, A. Nov. 29, 1916. Attaching bayonets to guns. - Consists in mounting a short bayonet or dagger on a revolver by a fastening which does not necessitate any modification of the revolver itself. In the construction shown, the upper part of the bayonet guard consists of two side limbs C' between which the barrel fits and the top of the handle is grooved and its rear end formed with projections B<3> to engage the body of the revolver. A spring bolt F in one of the limbs C<1> engages above the barrel behind the foresight.
Patent GB-639861-A (GB)
Title: A method of and a plant for treating the wort in the production of beer
IPC: C12C7/26
Filed: 1947-06-30
Abstract: 639,861. Treating wort. SOC. ALFALAVAL., and SOC. BELGE ALFA-LAVAL. June 30, 1947, No. 17207. Convention date, July 4,1946. [Class 14(ii)] In the production of beer, wort from the boiling stage is cooled to about 50‹C by trickling over a corrugated surface 4 cooled by two cooling systems 5, 6 in a vessel 3 through which and over the wort a current of air is blown causing co-agulation of the sludge which is carried by the beer as it passes to a plate cooler 11 where the temperature is reduced to about 1‹C when it is allowed to trickle over the inner corrugated surface 15 of a vessel 14 insulated by lagging 16 whilst air is blown through. The beer collecting at the bottom of the vessel has practically all the co-agulated coarse and fine sludge and is clarified in centrifuges 19 and passes to the fermentation tank 21. The Specification as open to inspection under Sect. 91 states also that the sludge may be co-agulated exclusively in the vessel 14 providing the wort coming from the brewhouse is chilled to 1‹C in the plate cooler 11. This subject-matter does not appear in the Specification as accepted.
Patent GB-623446-A (GB)
Title: Improvements in and relating to processes and apparatus for the regeneration of spent iron and steel acid pickle liquors
IPC: C23G1/36
Filed: 1946-06-06
Abstract: Iron and steel acid pickle liquor is regenerated by continuously adding it to a 40-60 per cent solution of sulphuric acid heated by a submerged flame burner so as constantly to evaporate water, and removing precipitated ferrous sulphate (substantially anhydrous) and accumulated regenerated sulphuric acid as they are formed, the rates of addition of spent liquor &c. of evaporation being regulated to maintain the proportion of sulphuric acid in the solution between 40 and 60 per cent.  The liquor is preferably evaporated to a point at which it "boils" at 105-140 DEG  C., whilst the heat of the <PICT:0623446/III/1> evaporated water and of the products of combustion from the burner may be used to heat the liquor in the pickling bath.  The crystals of ferrous sulphate may contain up to 2 molecules of water.  In the apparatus shown, spent liquor from the pickling tank B continuously enters the treating tank 1 having a base 11 sloping downwardly via a valve 15; the submerged flame burner A, fed with gas and air from inlets 20, 22, maintains boiling at between 105-140 DEG  C. depending on the strength of acid; substantially anhydrous ferrous sulphate collects at C and is drawn off, together with some acid, by the air lift 16, whence it is led to a centrifuge or separator 17 from which it leaves by a shoot 35, the separated acid returning to the pickling tank B or to a storage tank via the pipe 18.  Steam and hot gases from the burner pass through the outlets 13, 14 and are used to heat the pickling acid in tank B.  A valve 4 is also provided at the base of tank 1 for the removal of accumulated solids.
Patent GB-795330-A (GB)
Title: Improvements in or relating to electric accumulators
IPC: H01M10/637
Filed: 1956-06-05
Abstract: 795,330. Batteries. BOSCH GES., R. June 5, 1956 [June 8, 1955], No. 17281/56. Class 53. An accumulator is provided with two distinct sets of positive and negative plates in the same cell, the two sets being brought out to separate connections so that when it is desired to raise the temperature of the battery one set of plates can be short-circuited, the other set being used to supply current to the consuming device. The Figure shows a part of a 3-cell accumulator having positive plates 6 and negative plates 7. In each cell the three middle positive plates and the four adjacent negative plates constitute an independent subsidiary cell, these three cells being joined in series and having external positive and negative terminals 9, 10. The main battery is formed by the remaining plates in each cell, two negatives and two positives being situated on each side of the plates forming the subsidiary cell. The main cells are joined in series, the positive terminal being shown at 11 and the negative at 12. When the battery is to be warmed the terminals 9, 10 are shortcircuited. When it is to be charged the two sets of cells are joined in parallel and may remain so joined on discharge, being separated only when it is desired to pre-heat the battery.
Patent GB-515281-A (GB)
Title: Improvements in or relating to mechanical excavating and like equipment
IPC: E02F3/50
Filed: 1938-06-10
Abstract: 515,281. Winch - actuated load handling machines; relaying railway track. JONES, Ltd., W., and FERGUSON, T. M. June 10, 1938, No. 17334. [Classes 78 (iii) and 104 (ii)] [Also in Group XXI] In excavating and like equipment with a self - contained power unit angularly adjustable on a carriage and carrying a jib, a carriage adapted to work along the jib has a pusher plate secured to it 'in place of the usual bucket. In Fig. 1, a cranked jib 1 is raised and lowered by rope 10 and supports a carriage 11 reciprocated by ropes 15, 18, and carrying a pusher plate which may be flat or curved, and in the form of a rectangle or trapezium. The plate 13 may be adjustable about a horizontal or vertical axis; thus, it may be mounted on a turntable and adjusted by hand or remote control. The ropes 15, 18, may pass over pulleys on the carriage to anchorages 27, 26, to increase the purchase. In Fig. 3, the rope 10 is arranged either to lift the jib or advance carriage 11. The device may be used for unloading railway trucks, and afterwards, by supporting the jib on the plate 13 and placing a snatch block in a loop of rope 18 and hooking same to a rail, may be used for moving the railway track. In another form using a straight jib, when moving track, the outer end of the jib is supported by a frame comprising side members 36, 37, Fig. 6, pivotally connected by a link 41.
Patent GB-931114-A (GB)
Title: Coating of polyurethane foam
Inventor: TAYLOR STANLEY DOUGLAS
IPC: C08J9/36
Filed: 1959-05-22
Abstract: 931,114. Coated foamed articles. DUNLOP RUBBER CO. Ltd. April 22, 1960 [May 22, 1959], No. 17422/59. Class 140. Polyurethane foam articles, e.g. sheets, are coated by moistening the foam with water in the liquid or gaseous phase, spreading on at least one surface thereof a layer of an activated polyurethane prepolymer syrup and curing the layer by heating under pressure to produce an adherent polyurethane coating of greater density than that of the foam. The moistening may either precede or follow the step of spreading the prepolymer syrup. The prepolymercoated foam may be compressed at a compression ratio, defined as being the ratio of the volume of the foam before treatment to the volume after treatment, in excess of 2: 1 at an elevated temperature. The layer of activated prepolymer syrup may be formed from the reaction product of a polyether, polythioether, polyester, polyesteramide or polyamide, examples of which are given, and a molar excess of an organic polyiso- or polyisothio-cyanate, e.g. 2,4- or 2,6-tolylene diisocyanate and 1,4- naphthalene diisocyanate. The layer of syrup may contain a colouring material, e.g. dyes or pigments, of which examples are given, and may be patterned when curing by heating under pressure. Suitable catalysts are N-methylmorpholine and triethylamine. The thickness of the cured layer may be from 0.3 to 1.2 mm. In an alternative method, the prepolymer syrup is spread on dry polyether polyurethane foam and heated in live steam for approximately 30 minutes. Specification 898,271 is referred to.
Patent GB-559672-A (GB)
Title: Improvements in and relating to the deposition of substances on surfaces by vaporization
IPC: H01L21/12
Filed: 1942-12-08
Abstract: 559,672. Coating with metals. BRITISH THOMSON-HOUSTON CO.. Ltd. Dec. 8 1942, No. 17424. Convention date. Dec. 18, 1941. [Class 82 (ii)] [Also in Groups XXXVI and XV] Plates to be covered with a layer of a substance by vaporization are arranged within a substantially spherical container to conform with its inner surface, while the substance is vaporized from a point on the surface. This makes for evenness of coating wherever the plates are mounted within the sphere. In the example electric rectifier plates 20 are mounted in spring clips 19 in demountable segments 11 ... 15 of a sphere 10, the covering substance being vaporized from a plate 32 electrically heated. The sphere may be mounted within a bell-jar 40 capable of being: evacuated. In a modification, the sphere is made in two steel hemispheres united at their edges by bolts, and capable of being exhausted itself. The plates are held, in this example, by clips mounted on magnets which can be placed as desired on the inside of the sphere. In the example given of the coating of rectifier plates, the base disc is first coated with bismuth, then selenium; other materials mentioned which can be deposited, are metals, selenium dioxide, and magnesium fluoride (on to glass for reducing reflections).
Patent GB-987406-A (GB)
Title: Method for purifying gases
IPC: C10K1/12
Filed: 1961-05-12
Abstract: In a method of purifying gases containing H2S and CO2, e.g. gases from industrial plants, with water under pressure, the water contains 0.2 to 0.02 moles of (a) an ethanolamine and (b) of a weak polybasic mineral acid, per litre of water, the molecular ratios of the added substances being such that the pH of the solution does not exceed 8. The amine preferably has no hydrogen atom bound directly to a nitrogen atom.  The method is chiefly applicable to gases under a pressure of at least 10 kg. per square cm. and inhibits the formation of froth due to the presence of small amounts of liquid hydrocarbons and diminishes the disturbing effect of the presence of CO2 on the dissolution of the H2S in the water.
Patent GB-128108-A (GB)
Title: Improvements in or relating to Covers for Cans and the like Vessels.
Inventor: SHARP ROBERT FRANK
IPC: B65D41/04
Filed: 1918-10-25
Abstract: 128,108. Sharp, R. F., and Gardiner, A. Oct. 25, 1918. Lids, bayonet-joint.-A cap or cover for cans, drums, and other vessels for holding oils, paints, &c. is provided on the inner side with sloping ribs e to co-act with ribs c on the neck b of the vessel, an internal annular groove f to receive packing-material, and external ribs or projections g by means of which the cover d can be turned on the vessel. Perforated ears h, j are provided on the cover and vessel to receive a securing wire &c. carrying a lead seal.
Patent GB-543081-A (GB)
Title: Improvements in or relating to pneumatically operated portable tools
IPC: B23B45/04
Filed: 1940-12-10
Abstract: 543,081. Valves. INDEPENDENT PNEUMATIC TOOL CO. Dec. 10, 1940, No. 17519. Convention date, Dec. 4, 1939. [Class 135] [Also in Groups XXII and XXVI] A portable pneumatically-actuated tool for tapping, reaming, drilling, screw-driving &c. comprises reversible motor with an eccentric rotor and radially slidable vanes 10, and a grip handle at the rear of the tool in which is mounted a pair of push button valves 7, 8 normally closed by a spring. On depression of the valve 7 the motor is rotated in a forward direction and a spring catch 62 can hold the valve depressed to continue the forward motion. The catch 62 is biased by a spring to inoperative position. The valve 8 operates to reverse the rotation of the motor. On depressing either valve an exhaust valve 18 is operated by the action of extensions 50, 51 on a radial projection 37 with milled surfaces 38, 39, attached to a ported valve member 31 which directs the exhaust to a screen 28 and outlet port 30. The compressed air is supplied by a pipe 46 and controlled by a valve 68 formed of a bushing 74 having a groove 72 connected to the air inlet and a series of holes 73 of various sizes leading to the inlets of the valves 7, 8. A plug 75 is adjusted by screw and nut mechanism so as to close some of the holes 73 and thus regulate the inlet pressure. The spindle of the rotor drives a chuck 24 by planetary gearing. Oil for lubrication is supplied from a chamber 81, and an oil filter and feeding device 82 control the supply of oil to the air stream as it passes through the inlet chamber 42.
Patent GB-502954-A (GB)
Title: Improvements in and relating to the treatment of maize for the recovery of starch and related products
IPC: C08B30/04
Filed: 1937-06-23
Abstract: 502,954. Starch. POLLAK, J. E. (International Patents Development Co.) June 23, 1937, No. 17532. Drawings to Specification. [Class 121] A mixture comprising starch, gluten, and fine slop obtained by comminuting maize and treating it by the wet method to separate off germ and coarse slop is subjected to treatment in a series of centrifuges so as to remove the gluten and fine slop as overflow. The starchbearing component is progressively freed from the gluten and fine slop as it passes through the series of centrifuges. The separating operations may be so conducted as to yield two streams, one containing fine slop and one free from fine slop, and these streams may be centrifuged separately or together; with or without concentration of one or both streams. The overflow from a later centrifugal may be fed back to an earlier centrifugal. Waste process waters from any stage are in general re-used in an earlier stage of the process. The process is illustrated by flow sheets. Specification 502,791 is referred to. Reference has been directed by the Comptroller to Specification 455,158.
Patent GB-1537379-A (GB)
Title: Carbon black compositions and black-pigmented compositions containing same
IPC: C09D7/63
Filed: 1976-04-30
Abstract: 1537379 Coating compositions CABOT CORP 30 April 1976 [5 May 1975] 17624/76 Headings C3R C3K and C3F [Also in Division C1] A coating composition comprises: (a) a solvent-reduced vehicle containing 10-60% wt. of film-forming resinous binder (B); (b) 0À1-20% wt., based on the composition, of a pigment composition comprising carbon-black (C) of volatile content #4% wt.; and (c) an organic salt (S) of Fe and/or Zr providing 0À05-3% wt., as metal, based on (C). (S) may be a salt of a fatty acid, or a naphthenate. In examples, (B) is an alkyd and/or melamine-formaldehyde resin, an acrylic resin, or nitrocellulose; other ingredients include ethyl acetate, butyl acetate, ethanol butanol, ethylene glycol monosutyl ether, dibutyl phthalate, aromatic solvent, xylene, diethylamine, or silicone dissolved in xylene. The (C) and (S) may be added separately to the vehicle, or they may be added together in the form of (C) pretreated with (S).
Patent GB-799963-A (GB)
Title: Process for the separation of meta-di-isopropyl benzene-dihydroperoxide
IPC: C07C409/12
Filed: 1957-06-03
Abstract: Meta-di-isopropyl benzene-dihydroperoxide is separated from a mixture also containing diisopropyl benzene and di-isopropyl benzenemonohydroperoxide, by adding an aliphatic hydrocarbon or a mixture of aliphatic hydrocarbons boiling below 150 DEG  C. and separating off the dihydroperoxide or a phase containing it. After addition of the hydrocarbon the whole mixture may be cooled preferably to a temperature below 10 DEG  C., e.g. about -20 DEG  C., when the crystalline product, consisting almost entirely of meta-di-isopropyl benzene-dihydroperoxide, can be separated. Suitable hydrocarbons are pentane and a gasoline having a boiling range of from 40 DEG  to 60 DEG  C.  By adding acetone in addition to the aliphatic hydrocarbon, the meta-di-isopropyl benzene-dihydroperoxide dissolves chiefly in the bottom of the two liquid layers which form, and it may be recovered from this layer by evaporation.  Suitable proportions of reactants are for example 200 vol. per cent of aliphatic hydrocarbon or mixture of aliphatic hydrocarbons, together with 25 volume per cent of acetone, both percentages being calculated on the original mixture.  Examples are given of the separation of the dihydroperoxide using pentane at temperatures of -20 DEG  and 42 DEG C., and of the separation in the presence of pentane and acetone at -20 DEG  C.