baber/WOPTO huggingface dataset:
Patent GB-430949-A (GB)
Title: Improvements in and relating to centrifugal pumps
IPC: F04D29/44
Filed: 1934-08-29
Abstract: 430,949. C e n t r i f u g a l pumps. WORTHINGTON-SIMPSON, Ltd., Lowfield Works, Newark-on-Trent.-(Worthington Pump & Machinery Corporation; Harrison, New Jersey, U.S.A.) Aug. 29, 1934, No. 24901. [Class 110 (i)] The stages of a centrifugal pump are separated by removable diaphragms The diaphragms comprise rings 21, 22 which are clamped to a centre ring 27 by a screwed bush 22<1>. As the bush is screwed into position, the segments of the ring 27 are forced into engagement with the casing 1 by bevelled lugs 34 on the ring 22. The impellers are arranged back to back to reduce the end thrust and the casing is of uniform bore.
Patent GB-664016-A (GB)
Title: Portable book and record holder
IPC: G11B33/04
Filed: 1949-09-28
Abstract: 664,016. Book-troughs. VIDAL, L. J. Sept. 28, 1949. No. 24942/49. Class 52 (i). [Also in Groups XV and XVII] A portable open-ended holder having compartments for a book b and phonograph records has finger notches 9 in the wells 1 and partitions 6, to facilitate gripping of the records for withdrawal, and a further set of finger notches 13, outside the zone of the records, to permit withdrawal of the book. The book also has a finger notch 12 in line with notches 9.
Patent GB-781529-A (GB)
Title: Process for hydrochlorinating an unsaturated aliphatic compound
IPC: C07C51/363
Filed: 1955-08-31
Abstract: Unsaturated organic compounds having a functional group and an ethylenic linkage separated therefrom by at least 2 C atoms are hydrochlorinated at the double bond in an anhydrous form with hydrogen chloride with a Friedel-Crafts catalyst other than HF, in minimum ratio of 0.4 equivalent to 1 mol. of product theoretically obtainable.  In examples oleic acid is hydrochlorinated in ether with gaseous HCl in presence of ZnCl2 with varying proportions of reagents and catalyst; oleyl alcohol is hydrochlorinated in ether with and without ZnCl2; zinc dioleate is hydrochlorinated, the catalyst being generated in situ; other specified unsaturated compounds which can be similarly hydrochlorinated include many other aliphatic acids, their salts, esters, glycerides, and derivatives, other alcohols and their derivatives, and compounds containing the carbonyl group; specified acids include mono and polyethylenic acids such as sorbic, linoleic, dilinoleic, undecenoic, and generally fatty acids and their derivatives having at least 10 and preferably 18 C atoms; other FriedelCraft metal salts of the unsaturated acids are also specified; as compounds containing the carbonyl group, oleyl aldehyde and dioleyl ketone are referred to.
Patent GB-991455-A (GB)
Title: Improvements in or relating to soil-tilling implements
IPC: A01B23/04
Filed: 1961-07-10
Abstract: 991,455. Agricultural implements. PATENT CONCERN N.V. July 10, 1961 [July 28, 1960], No. 24980/61. Heading A1B. A harrow is attached to a frame portion 35 by means of a parallel linkage 51 in which the links 50, 51 are formed of resilient strips so that when working the harrow reciprocates in a direction transverse to the direction of travel. The frame 35 is attached to a tractor hitch linkage and is provided with a frame 41, 45 which limits the transverse movement of the links 50, 51 and the links abut the member 41 when the implement is raised. As shown three harrows are connected to a bad 1 provided with outer hinged portions 2, 3. The harrow teeth are in pairs each pair being bent from a single piece of resilient wire and fixed to transverse members 13 which are each provided with an arm 25 which in each harrow is connected by a link 26 adjusted by a lever 27 so that each member 13 may be rotated to adjust the harrow tines. Specifications 991,456 and 991,457 are referred to.
Patent GB-616042-A (GB)
Title: Improvements relating to forging
IPC: B21J13/02
Filed: 1946-08-22
Abstract: 616,042. Forging. FORGINGS & PRESSWORK (BIRMINGHAM), Ltd., and JONES, A. Aug. 22, 1946, No. 25036. [Class 83 (iv)] Dies.-In forging in succession at least two articles from a billet, the dies are arranged to provide a neck or tag between the first article to be forged and the remainder of the billet, the tag being used to hold the billet while the last portion is being forged. In forging two articles from a billet 17, the billet is first placed in a portion 26 of the forging die so that a ridge 28 forms a neck 13 on the billet. One end of the billet is then placed in the centre portion 30 having an opening 31 for the end of the adjacent portion of the billet. The article 20 is then forged and is joined by means of a flash 33 to a circular neck or tag 15 formed by a portion 32 of the die. After the flash has been knocked away from the article and from the tag, the tag serves as a means for holding the end 22 of the billet, while the second article is being forged. If three articles are to be produced from one billet, the tag formed during the forging of the first article would be cut off before the forging of the second article.
Patent GB-843649-A (GB)
Title: Improved means enabling cookers designed for firing with solid fuel, to be convertedso that they can be fired with liquid fuel
IPC: F24C1/06
Filed: 1957-08-08
Abstract: 843,649. Converting solid fuel cookers for liquid fuel firing. BECK, B. R. June 23, 1958 [Aug. 8, 1957], No. 25094/57. Class 126. A burner unit for converting a solid fuel-fired cooker to liquid fuel burning comprises a burner 54 fitted with at least one wick and constructed to burn with a blue flame and a platform 35 with adjustable legs 39, a rearwardly projecting arm 36 on which the burner is mounted and a counterweight 41. The burner 54 comprises a base 13 formed with a central opening 28, and annular concentric troughs 14, 15 connected by bridges 17 spanning an air passage 16, liquid fuel, such as kerosene, passing through passages 18 in the bridges 17 to the trough 15. Sleeves 19-22 of perforated sheet metal are supported on a plate 26 resting on the inner wall of the trough 14, the inner and outer ends of the bridges 17 and the outer wall of the trough 15 respectively, and form annular flame spaces 23 and 24 with an intervening air space 25 communicating with the air passage 16. Combustion air also passes through the opening 28 in the base 13 and an opening 27 into a central space 28a. Wicks 29, 30 are engaged in the troughs 14 and 15 respectively and project into the flame spaces 23 and 24, to be ignitible from above, removable lids 31 and 32 covering the air spaces 28a and 25 respectively to force rising air through the perforations in the shells 19-21. Kerosene is supplied to the trough 14 through a pipe screwed into a hole (neither shown) in a spider 33 integral with the base 13 which opens into the trough 14. A fuel storage vessel 47 of barometric type has a valve which closes as a tank 52 is righted for refilling, the tank normally being suspended over a bowl 50, a feed rule 46 with a regulator valve 53 being connected to the bowl 50. To instal the burner unit in the cooker, the grate and ashpan are removed and a small recess is cut in the ashpit door to receive the pipe 46. The unit is inserted through the ashpit doorway to stand on the adjustable legs 39 in the ashpit with the burner lying beneath the fuel feed tube 2 of the cooker surrounded by a jacket 4 with intervening heating passages leading ultimately to the flues.
Patent GB-405375-A (GB)
Title: Improvements in or relating to belting
IPC: F16G5/18
Filed: 1932-09-09
Abstract: 405,375. Driving belts. BRAMMER, H., Vesper Mount, Vesper Road, Kirkstall, Leeds. Sept. 9, 1932, No. 25106. [Class 80 (i).] In flexible belting of the kind comprising a flexible strip maintained in corrugated form by a flexible element passing therethrough, the inner element is constructed of links connected by loose pivot-pins projecting beyond the links and held against axial movement by detachable locking devices co-operating with the projections. In the form shown in Figs. 1 and 6, a corrugated strip 1 is threaded on a chain 4, the links 8 and pivot pins 7 being inserted progressively as each corrugation 2 is formed. The pins 7 are held in position by pegs 10 passing through holes 9 in the pins, and having rounded ends 11 to support the corrugations. The links may be of raw hide, leather, or metal, and the pivot-pins of hard hide, steel, or other metal. In the modification shown in Fig. 3, the pegs 10 are replaced by U-shaped members 12 carrying transverse reinforcing bars 13, which may project beyond the edges of the belt to take up lateral compression. In the form shown in Fig. 9, the pins 7 are secured by plates 14 having keyhole slots 17 to engage grooves 16 near the ends of the pins. In a further form, Fig. 8, the links of the chain may be formed of coils of wire. According to the Provisional Specification, the strip 1 may be of rubberized fabric. Specification 301,602, [Class 80 (i), Gearing, Belt &c.], is referred to.
Patent GB-655098-A (GB)
Title: Improvements in or relating to electrolysis of fluorine salts
IPC: C25B1/24
Filed: 1948-09-27
Abstract: 655,098. Electrolytic production of fluorine. HOWELL, W. N., HILL, H., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Sept. 27, 1948, No. 25149. [Class 41] In the production of fluorine by electrolysis of substantially dry mixtures of fused fluorides e.g. of approximate composition KF.2HF, anode polarization is reduced by use of an anode of carbon of permeability not less than 5, preferably not less than 20, the permeability being expressed in terms of the number of cubic feet of air which can be passed per minute per square ft. of surface through one inch thickness of the carbon under an impressed pressure of two inches of water. In an example the electrolyte is of approximate initial composition KF.2HF containing less than 0.5 per cent of water. The temperature is initially 75 C. and is maintained between 75 and 90 C. The H.F. content is maintained between 40 and 42 per cent by periodic additions of anhydrous hydrogen fluoride. The carbon anode is of permeability 37.5. A cell for carrying out the process comprises a container 1 and a lid 2 both of mild steel or other resistant material. The carbon anode 3 is supported by a conducting rod 6 insulated from the lid at 4. The cathode 5 which may be of mild steel or copper, is supported by a conducting rod 7 insulated from the lid. The anodic and cathodic gases are separated by a skirt 8 depending from the lid and are led off by exits 10, 11. Heating means, not shown, are provided. Specification 642,812 is referred to.
Patent GB-238095-A (GB)
Title: Improvements in oil cups
IPC: F16N7/08
Filed: 1924-10-22
Abstract: 238,095. Dutro, L. C. Oct. 22, 1924. Oil cups.-A tubular member 17, Fig. 1, extending through an airtight cup 11, is provided with a partition member 23 between its ends, the upper portion, which is provided with apertures 24 communicating with the cup, serving for filling the latter, and the lower portion constituting a well 25 having an inlet orifice 26 communicating with the cup and an outlet tube 22 projecting above the inlet orifice 26. The body 16 of the cup is made of glass, and the tube 17 holds the component parts of the cup together. Normally, the level of oil in the well 25 is below the upper end of the discharge tube 22, but, when the bearing 21 to which the cup is attached becomes heated,. the expansion of the air within the cup forces oil into the well, from which it overflows into thetube 22. When the bearing cools, the air in the cup contracts and oil and air are sucked from the well into the cup. A small aperture 43, Fig. 3, may be provided for inlet of air. In the modification shown in Fig. 2, an air chamber 41 secured to the bearing 39 communicates through a pipe- 42 with the cup 11 above the level of the oil, the cup being mounted on a member 40 carried by the chamber 41. Specifications 178,009 and' 232,858 are referred to.
Patent GB-655401-A (GB)
Title: Improvements in or relating to method of and apparatus for the separation of acidic gases from gaseous mixtures
IPC: B01D53/18
Filed: 1947-09-15
Abstract: <PICT:0655401/III/1> In separating an acidic gas from a heated gaseous mixture by cooling the mixture, contacting it with a lean absorbing solution, regenerating enriched absorbing solution and recirculating the resulting lean solution in contact with the gaseous mixture, the regenerated absorbing solution is circulated in indirect heat exchange relation with the gaseous mixture in advance of the cooling thereof and the thus heated absorbing solution is contacted in heat exchange relation with lean absorbent in the region of the solution regeneration.  In a preferred embodiment, the combustion gases containing CO2 and resulting from the burning of oil, gas or coal, are passed into contact with a coil 10, cooled at 15 by water sprays and discharged into the bottom of an absorber 18, in which they rise in counterflow with descending lean or regenerated absorbing solution supplied through pipe 19 and heat exchangers 20, 21 from a regenerator 11.  Stripped gases pass from the absorber to stack through pipe 28 fitted with a mist separator 29 from which liquid is returned to the absorber, while enriched absorbent is pumped to the regenerator in which it descends in counterflow with steam rising from the hot solution which is continuously pumped from the bottom of the regenerator to the heating coil 10 and returned. Boiling of the absorbent in the heating circuit and discharge of absorbent from the regenerator to the absorber, which may be controlled by liquid level controlled valve 191, is effected by operating under superatmospheric pressure, which may be maintained by pump 23 working in co-operation with valve 27, attached to a condenser 25 through which the separated CO2 passes to use or to conventional purification and treatment apparatus and from which condensate is returned to the regenerator; alternatively, the absorbent may be passed, at atmospheric pressure, through the heater 10 fast enough to prevent decomposition of the absorbent, as in the case of organic liquids such as ethanolamine.  Water or other cooling liquid is continuously supplied through pipe 13, pump 34 and through heat exchangers 24 and 21 in lines 35 and 36 respectively to the cooling chamber 15, and exits at 331.  Specification 344,786 is referred to.
Patent GB-1423272-A (GB)
Title: Production of superconductors microbiological reduction of 11-hydroxy-15-keto
IPC: H01L39/00
Filed: 1973-05-29
Abstract: 1423272 Superconductors BBC BROWN BOVERI & CO Ltd 29 May 1973 [31 May 1972] 25334/73 Heading HIA The superconductor in a multifilament stabilized arrangement is vanadium gallide formed by diffusion of gallium into vanadium from contiguous copper-gallium alloy. Diffusion masking with tantalum or molybdenum is used so that filaments are formed, or selective diffusion of tin or aluminium is used to locally destroy effective superconductivity and so form filaments. The diffusion step is effected as the last stage in the formation of the arrangement. (The process is detailed in the abridgment of Specification 1,423,271.) The first step is the production of a cylindrical rod or rectangular bar comprising sheets of vanadium and copper gallium together with the foreign material which will locally prevent the formation of the superconductor. The foreign material is so provided that the superconductor filaments when formed will lie parallel to the axis of the rod or bar. In one arrangement a tri-layer assemblage of copper-gallium; vanadium; and coppergallium strips is wound on a copper-gallium cylindrical core, the vanadium central strip being longer and used to make the final covering turn. This ensures that, when the wound core and many like it are inserted into bores in a copper cylinder, gallium is prevented from diffusing into this copper and raising its resistivity. In a variant the wound core is inserted into the bore of a copper bar of hexagonal crosssection, many such bars being packed into a hollow copper cylinder. In the other arrangements tri-layer assemblages are wound or zigzag folded to form rectangular bars, the vanadium again being used to cover the bar which with others is inserted with copper packing bars into a hollow copper cylinder. Another arrangement uses a stack of alternate strips of vanadium and copper-gallium to make a rectangular bar which is then wrapped in vanadium strip. All these arrangements may be pre-formed to remove cavities and are then mechanically formed (possibly with an initial stage using high hydrostatic pressure) to unite the component parts in intimate metallic bond and to reduce the arrangement. The final stage is a heat treatment to effect the diffusion formation of the vanadium gallide. Before this final stage the reduced arrangement may be chopped into shorter lengths and these again placed in copper sheaths and further forming and reduction effected.
Patent GB-634344-A (GB)
Title: Improvements in or relating to kinematograph film tensioning devices
IPC: G03B1/42
Filed: 1947-09-17
Abstract: 634,344. Kinematograph film tensioning devices. MILLS INDUSTRIES, Inc. Sept. 17, 1947, No. 25381. Convention date, Aug. 9, 1946. [Class 97 (i)] The device comprises a rotatably mounted star-wheel, spring means tending to rotate said wheel in one direction, and rollers mounted on the points of the star-wheel so that opposite sides of opposed rollers may contact a kinematograph film and the tension in the film tends to rotate the star-wheel against the action of said spring means. In the form shown, the starwheel 5 is secured to a shaft 6 which is journalled in a bearing on a bracket 8. Around the outside of the bearing is wound a torsion spring, fastened at one end to the bracket 8 and at the other end to a collar, which may be rotated to vary the spring tension and thereafter secured to the shaft 6 by a set-screw. Prior to threading of the film through the device, the wheel 5 is rotated against the spring pressure until a stop 16 thereon contacts the bracket 8. Thereafter, the film, which is passing from a projection gate to a take-up reel, is led under roller 1 and above roller 3. Slack in the film is thus taken up by the rotation of the wheel 5 under spring action. Depending on the amount of slack in the film, the wheel 5 may rotate through 180 degrees until a stop 17 thereon contacts the bracket 8; in this position, the film contacts opposite sides of the opposed rollers.
Patent GB-1262083-A (GB)
Title: alpha-CALCIUM SULPHATE HEMIHYDRATE
Inventor: CAFFERATA GERALD WATERWORTH
IPC: C04B11/024
Filed: 1968-05-28
Abstract: 1,262,083. α-Calcium sulphate hemihydrate. BPB INDUSTRIES Ltd. 21 May, 1969 [28 May, 1968], No. 25495/68. Heading C1A. α-Calcium sulphate hemihydrate is prepared by mixing a crystal habit modifier with powdered gypsum, agglomerating the mixture into discrete masses such as pellets or briquettes and calcining these masses in an autoclave containing saturated steam preferably under a steam pressure of between 20 and 75 p.s.i.g. The crystal modifier is suitably succinic, maleic, citric, phthalic or malic acid, a soluble salt thereof or a derivative such as methyl succinate and itaconic acid, and can be intimately dispersed throughout the powdered gypsum either in a powdered form or by spraying or otherwise moistening the gypsum with a solution of the modifier. After calcining and drying, the product may be ground down to give the desired "normal consistency" (defined). In the examples the milled products consisted of crystals between 30 and 50 microns in size and had surface areas between about 7000 and 8000 sq. cm./g.
Patent GB-1028483-A (GB)
Title: Improvements in dispersion of liquid-gas mixtures in liquids
IPC: B01F25/64
Filed: 1964-06-19
Abstract: 1,028,483. Mixing appliances; froth flotation. PREPARATION INDUSTRIELLE DES COMBUSTIBLES. June 19,1964 [June 21,1963], No. 25512/64. Headings B1C and B2H. In a froth flotation cell compressed air is supplied to a trunk 10 having a Venturi constriction 14 to the throat of which a conduit 18 supplies liquid reagent; the atomized mixture passes through slots 46 into the hollow curved vanes 38, 40 of the rotary agitator. The reagent is supplied from a tank 22 the headspace pressure in which is equalized with that in the trunk 10 by the pipe 28; the proportion of reagent supplied is controlled by a valve 20. Pulp may pass into the interior of the agitator between the vanes through arcuate slots 48. The trunk or Venturi tube may also act as drive shape for the agitator, which may have more than one rotor.
Patent GB-688866-A (GB)
Title: Improvements in or relating to crystal rectifiers
IPC: G01R31/26
Filed: 1950-10-19
Abstract: 688,866. Crystal rectifiers. GENERAL ELECTRIC CO., Ltd., DOUGLAS, R. W., and LINDELL, A. O. E. Sept. 25, 1951 [Oct. 19, 1950], No. 25516/50. Drawings to Specification. Class 37. A crystal rectifier comprises an element of germanium and an electrode, the contact surface of which contains gold, the assembly having been subjected to an electrical power treatment consisting of the passage of at least one pulse of current of about one ampere through the contact. Small quantities of an impurity such as antimony may be added to the germanium to lower its bulk resistance. The electrode may consist of a pointed gold wire, or a gold-plated tungsten wire. The current pulse may be provided by applying 20 volts A.C. or D.C. through a resistance of 10 ohms to the device, or by discharging a condenser through the contacts with no current limiting resistance. The treatment reduces the forward resistance and also the reverse resistance, which is desirable in certain cases such as telephone modulator circuits.