baber/WOPTO huggingface dataset:
Patent GB-1047008-A (GB)
Title: Method for heating molten salts
IPC: C01F7/58
Filed: 1965-06-25
Abstract: A method of evaporating aluminium chloride from a molten salt mixture, which comprises passing a stream of molten salt mixture through an electrically insulated chamber, leading evolved gaseous aluminium chloride through a conduit in the wall of said chamber leading out of a gas space above said stream, the heating being effected by passing an alternating electric current through the molten salt in said chamber by means of electrodes immersed in said molten salt, said electrodes including electrodes held at approximately earth potential and positioned close to the inlet and outlet of said chamber, and at least one other electrode immersed in said molten salt intermediate said earth potential electrodes. Apparatus is described in which two-phase and three-phase current is employed. The salt mixture may be aluminium chloride/sodium chloride obtained by condensing part of an aluminium chloride stream from the aluminium sub-halide process of aluminium recovery. Distilled aluminium chloride may be recycled to said sub-halide process.ALSO:An apparatus for evaporating aluminium chloride from molten salt mixtures comprises an electrically insulated chamber through which the salt mixture passes by way of an inlet and an outlet and having electrodes at approximately earth potential positioned near said outlet and inlet and at least one other electrode intermediate said earth potential electrodes, said electrodes being immersed in the molten salt, the heating of said stream being effected by passing an alternating electric current between said electrodes, the aluminium chloride vapour being removed through a conduit in the wall of said chamber.  Apparatus is described in which two-phase and three-phase current is employed.
Patent GB-303581-A (GB)
Title: Improvements in or relating to silencers for the exhaust of internal combustion engines
IPC: F01N1/08
Filed: 1927-10-13
Abstract: 303,581. Danby, J. F. W., and Buckley, C. Oct. 13, 1927. Exhaust silencers. - Exhaust gases pass through a pipe 1 into an open ended cylinder 3, bars 4 across which support an axle 5 on which are mounted threebladed propellers 6 rotated by the flow of the exhaust. The axle 5 is extended at 9 to carry an impeller 12 the blades 11 of which are inclined to produce a suction effect on the gases. The blades rotate in an annular space 13 between the cylinder 3 and a surrounding cylinder 14 which is slotted at 16 to permit the gases to enter another annular space 17 formed by a cylinder 18 having outlet slots 22. The slots 16, 22 are arranged at opposite ends of the cylinders in order to produce a sinuous flow of the exhaust. The slots 22 deliver into an annular passage 35 between the cylinder 18 and an outer casing 27 which has an extension 29 filled with wire netting or turnings and terminating in an outlet portion 36, slotted at 31, bevelled at 32 and containing a flap valve 33. The end of the cylinder 14 is closed by a dished end-plate 19 shaped so as to facilitate the passage of the exhaust gases from the cylinder 3 to the annular space 13. The areas of the passages through which the exhaust passes, increase from the cylinder 3 to the annular space 35. This space may contain a single or multiple helical baffle 36 to whirl air admitted through ports 34 where the silencer is used on aircraft. The cylinder 18 may be dispensed with. The cylinders and casings have their flanged ends secured by bolts 28. In a modified construction, the cylinder 14 is situated at the end of the cylinder 3 and contains an impeller driven through toothed gearing from, but in the reverse direction to. the propeller in the cylinder 3 and at a lower speed. The cylinders and casings are attached to shoulders on an end plate, the bearings for the rotating parts are provided with lubricating means, and the outlet terminates in a slotted fishtail portion. The construction of the silencers facilitates assembling and dismantling.
Patent GB-1465635-A (GB)
Title: Methods for the synthesis of wollastonite
IPC: C04B35/22
Filed: 1974-06-19
Abstract: 1465635 Synthetic wollastonite BUREAU DE RECHERCHES GEOLOGIQUES ET MINIERES 19 June 1974 [20 June 1973] 27253/74 Heading C1A Synthetic wollastonite is produced from a naturally-occurring chalk containing 30-70 wt. per cent of silica in a poorly crystallized form and 70-30 wt. per cent calcium carbonate, by comparing the SiO 2 /CaCO 3  weight ratio with the stoichiometric ratio, and if the ratio differs by more than 10%, adding SiO 2 , CaCO 3  or at least one other chalk containing SiO 2  and CaCO 3  in different proportions to form a homogeneous mixture with the ratio within 10% of the stoichiometric ratio, reducing the particle size of the chalk or the mixture to less than 2 mm. and heating the chalk or mixture to 1000‹-1100‹ C. to obtain low-temperature wollastonite, or above 1100‹ C. but not exceeding 1500‹ C., and preferably between 1100‹ and 1200‹ C., to obtain hightemperature pseudo-wollastonite. The length of the thermal treatment may be reduced by incorporation into the chalk of one of the following salts: KCl, CaCl 2 , CaF 2 , NaF, NaCl, Na 2 CO 3 , Na 2 SiO 3 , Na 2 WO 4 , LiF, LiCl, Li 2 CO 3 . SiO 2  may be added in the form of opal, kieselguhr or globular silica.
Patent GB-1196873-A (GB)
Title: Device for Simultaneously Cutting the Sewing Threads in a Sewing Machine.
IPC: D05B65/00
Filed: 1968-06-07
Abstract: 1,196,873. Sewing-machines. VIRGINIO RIMOLDI & C. S.p.A. 7 June, 1968 [7 July, 1967], No. 27265/68. Heading D1G. In a chainstitch sewing machine a thread cutter 15 is provided to cut both threads simultaneously and comprises a hooked blade 27 which moves under the action of a pneumatic cylinder a piston 20, 21 and, after a dwell, also moves the counter blade and clamp 18, 19, the cutter being connected to pulling means 37, 38 for pulling thread from the bobbin. The dwell is produced by slots in the parts 18, 19 and a fixed pin in the cutting blade 27. The pulling means comprises in each case movable eyelet between two fixed eyelet. The pulling means are connected together and to the cutting means. Before the pulling means operate the disc thread tensioners are released. A two needle machine may be used.
Patent GB-443740-A (GB)
Title: Means for fastening propellers
IPC: B64C11/04
Filed: 1934-09-25
Abstract: 443,740. Screw propellers. RUPP, A., 48, Hermannstrasse, Neukolln, Berlin. Sept. 25, 1934, No. 27438. [Class 114] A clamping member for screw pro-' pellers is formed as a hollow body and the front flange thereof is provided with inside ribs. The screw propeller 8 is keyed at 13 to a flange 7 at one end of a boss 6 secured to the propeller shaft 10. At the other end the nave is clamped by a hollow member 2 having internal ribs 3, final fixing being by a nut 9. The flange 1 has a reinforcing ring 4. In addition to the inside ribs 20, external ribs 19 either plain or spiral are provided. Inner ribs 21 of hexagonal outline, and an inner stiffening rim 22 with ribs 23 may also be embodied. The inner surface of the flange 1 is roughened by depressions 25, 26 in the form of circular rings which intersect each other.
Patent GB-483026-A (GB)
Title: Improvements in and connected with trunks for personal wear
IPC: A41D7/00
Filed: 1936-10-09
Abstract: 483,026. Trunks for personal wear. JANTZEN KNITTING MILLS, Ltd. (Jantzen Knitting Mills) Oct. 9, 1936, No. 27483. [Class 141] Knitted bathing trunks 1 are provided with a vertical slit 2 extending from the waist portion to near the crotch, and adapted to be closed by a sliding-clasp fastener 7, and are further provided internally of the front portion with a V-shaped supporter 10 formed with a slit preferably opposite to that in the trunks, the limbs 11, 12, of the supporter on either side of the slit being connected with the trunks so that they move towards and away from each other when the front of the trunks is closed and opened. One series of elements of the fastener 7 is spaced from the edge 6 of the slit 2 so that a flap 6a is provided which covers the elements of the fastener when this is closed. The apex of the supporter 10 is secured to the crotch, and the ends of the limbs 11, 12, to the waist of the trunks, which is preferably of elastic material. In a modification, the waist portion is formed with one or more pockets to receive a belt.
Patent GB-237780-A (GB)
Title: Improvement in locomotive axle boxes
IPC: B61F15/04
Filed: 1924-11-18
Abstract: 237,780. Mellin, C. J. Nov. 18, 1924. Reservoirs in axle-boxes.-In a locomotive axlebox 1, Fig. 1, having a lubricant reservoir 3 and supplementary bearings 2 below the crown brass 1<a>, a wedge strip 9 presses against one side of the reservoir 3 and the adjacent wall of the axlebox to prevent the side walls of the latter from closing in on the axle journal. As shown, the wedge 9 is located in a correspondingly shaped recess in the lubricant reservoir 3 and can be adjusted by screws 10. The supplementary bearings 2 and reservoir 3 are adjustably supported by nuts 5, 7 and spacing washers 11 on bolts 4, each of the latter having a circular head accommodated in a recess in an inner face of the axlebox. In a modification, the lugs 3b on the reservoir 3 are omitted and the latter is supported by bars 6, Fig. 7, which engage grooves in lugs 3e on the reservoir and pass through slots in the bolts 4.
Patent GB-945009-A (GB)
Title: Railway car truck
IPC: B61F5/12
Filed: 1960-08-09
Abstract: 945,009. Railway vehicle undercarriages. AMSTED INDUSTRIES Inc. Aug. 9, 1960 [Sept. 30, 1959], No. 27614/60. Heading B7L. A friction shoe 20, Figs. 4 and 5, for snubbing the end of a bolster of a railway truck comprises a body portion 21 having a main friction wall 22, to engage a liner on a truck side frame column, and spaced inclined friction walls 30 engaging complementary surfaces 32, Fig. 10, formed in a pocket in the bolster 16, the walls 30 having wings 28 projecting therefrom for reception in recesses 40 formed in the pocket. The vertical sides of the shoe adjacent the wall 22 engage guide flanges 42 of the bolster, the flanges 42 being connected to flanges 41 bounding the recesses 40, with the interpositioning of cored openings 43. Instead of the guide flanges being provided on the bolster they may be provided on the shoe. In another embodiment described with reference to Figs. 8 and 9 (not shown) the wings 28 are joined at their lower ends by a horizontal flange thereby forming a U-shaped friction surface. The shoe pockets may be provided in the side frame columns instead of in the bolster ends.
Patent GB-1129018-A (GB)
Title: Improvements in or relating to therapeutic composition, useful, in particular, as antiinflammatory composition and in ophthalmology
IPC: C07D311/30
Filed: 1967-06-15
Abstract: 1,129,018. Xanthorhamnine-containing compositions. LABORATOIRES LAROCHE NAVARRON. 15 June, 1967 [4 July, 1966], No. 27688/67. Heading A5B. Therapeutic compositions comprise, as active ingredient, xanthorhamnine, and a pharmaceutically acceptable vehicle. The compositions are stated to have anti-inflammatory activity and to be useful in ophthalmology.
Patent GB-240325-A (GB)
Title: Improvements in or relating to tobacco pipes
IPC: A24F1/00
Filed: 1924-11-19
Abstract: 240,325. Dadson, H. H. Nov. 19, 1924. Tobacco pipes. - A tobacco pipe having a two-part bowl, as described, for example, in Specification 205,361, has the floor of the lower or secondary chamber C of the bowl formed flat or curved to a radius greater than that of the upward curve of the surrounding wall of the chamber; the bore F of the stem enters this chamber at or near the bottom thereof, and a substantially vertical recess or niche E is provided in the wall where the stem bore enters the chamber and extends upwardly to, or nearly to, the underside of the bottom of the tobaccoholding portion A of the bowl. In this way the draught passage of the pipe cannot be cut off by a loose body D of absorbent material within the secondary chamber.
Patent GB-157603-A (GB)
Title: Improvements in artificial ear-drums and inserters
IPC: A61F2/18
Filed: 1919-11-11
Abstract: 157,603. Hosking, J. Nov. 11, 1919. Ear instruments and hearing appliances.-An artificial ear drum consists of a disc a of lint, woollen felt, or similar soft absorbent material supported by a small disc b of buckram or the like. The edges of the disc a may be oversewn to prevent fraying. A thread c is attached to the centre of the disc to facilitate insertion and removal. The drum is inserted by means of a steel rod d the end of which is formed as an eyelet at an angle of about 100‹, or its supplement, to the stem. The absorbent disc may be medicated.
Patent GB-732538-A (GB)
Title: Improvements in the electrodeposition of alloys containing copper and tin
Inventor: SCHMERLING GRIGORY
IPC: C25D3/58
Filed: 1951-11-27
Abstract: 732,538. Electrodeposition of copper-tin alloys. SILVERCROWN, Ltd. Nov. 11, 1952 [Nov. 27, 1951], No. 27824/51. Class 41. In a process for the electrodeposition of an alloy consisting mainly of copper and tin, anodes of the alloy are used and the electrolyte includes citric acid or a soluble salt thereof. The preferred additive is sodium citrate. The electrolyte may also contain copper cyanide, sodium stannate, sodium cyanide and sodium hydroxide. Copper cyanide may be replaced by copper carbonate, copper oxide or copper sulphite. Sodium citrate may be replaced by potassium or ammonium citrates or citric acid. The anodes may be 80-95 per cent copper and 5-20 per cent tin, and may include a small proportion of aluminium or an alloy of aluminium and magnesium. The coating of copper and tin alloy may be subsequently coated with chromium by electrodeposition.
Patent GB-927115-A (GB)
Title: Electrically conductive paper, and method of making it
IPC: H01B1/22
Filed: 1960-08-12
Abstract: In coating glass fibres having a diameter between 0.1 and 1.0, e.g. 0.35 microns, with silver, the fibres are washed successively with a strong detergent solution, de-ionized water, 0.1% stannous chloride solution and de-ionized water and then agitated violently in an ammoniacal solution of silver until they attain a length of 1/8 inch or less and are uniformly dispersed.  With gentle agitation, dextrose is then added to reduce the silver complex and deposit metallic silver on the fibres.  The ratio of fibre surface to solution volume during the reduction should be at least 35, preferably 90 cm.2, per c.c.  The concentration of silver in the ammoniacal solution should be at least 0.01, preferably 0.015 to 0.05, gram atoms per litre. The weight of silver deposited should be between 5 X 10-6 and 5 X 10-5 grams per cm.2 of fibre surface.  The coated fibres may be used for making electrically conductive paper (see Group VIII).
Patent GB-618278-A (GB)
Title: Improvements relating to electric irons
IPC: D06F79/02
Filed: 1946-09-18
Abstract: 618,278. Current supply stands. SMITH, J. R., and DOUGLAS, J. A. Sept. 18, 1946, No. 27951. [Class 39 (iii)] In a current supplying stand for electric irons provided with a contact box C having two spring terminals c<1>, c<2> connected to the supply source and adapted to be engaged by projecting terminals g', g<2> of the iron when the latter is placed on a sloping base B<1> of the stand, the contact box C is adjustably mounted on the stand B so that its position relative to the base B<1> may be adjusted to suit the size of iron used and the position of the terminals thereon. The contact box C is adjustably supported by pivot pins c locked bv means of lock nuts in the desired position in slots b<1> in the sides of the stand B. A peg b<2> can be inserted in any one of a series of holes b in the base B<1> and holds the box against displacement from its set position. The terminals g<1>, g<2> are arranged to pass one above' and one below an insulating strip D<2> in the contact box C to engage terminals c<1>, c<2> respectively. Further insulating strips D<1>, D<3> are disposed as shown and each strip has a rounded edge to facilitate insertion of the terminals. The terminals g<1>, g<2> may be formed integral with the iron or carried by an adaptor G secured to the usual iron terminals.
Patent GB-167700-A (GB)
Title: Improvements in trap nests for hens and the like
IPC: A01K31/16
Filed: 1920-10-02
Abstract: 167,700. Hedges, T. Oct. 2, 1920. Trap nests.-A trap nest for poultry has a falling door A formed of slats connected together by wires, and guided in grooves A<1> at each side. The door is furnished with hooks G which en. gage with arms D to retain the door in the open position. The arms D are attached to a tilting platform C so as to release the door when a hen passes beyond the pivot which is supported on blocks H. A bridge E prevents the egg from rolling forward on the platform C.
Patent GB-242453-A (GB)
Title: Improvements in and relating to the disposal of industrial waste materials
IPC: B65F1/16
Filed: 1924-11-24
Abstract: 242,453. Fry, J. H. Nov. 24, 1924. Refuse bins.- A receptacle 2 for the disposal of waste materials in foundries &c. is provided with a detachable lid which rests on shoulders 3 and has fiapdoors 5 controlled by counterweights 7 housed. in lateral extensions 8. When the receptacle is full, this lid is replaced by a lid of ordinary type.
Patent GB-1532603-A (GB)
Title: Melt polymerization of epsilon caprolactam
IPC: C08G69/00
Filed: 1977-07-05
Abstract: 1532603 Hydrolytic polycaprolactam DOW CHEMICAL CO 5 July 1977 [6 July 1976 26 Oct 1976] 28164/77 Heading C3N The hydrolytic melt polymerization of caprolactam is effected under pressure at 180 to 300‹ C. in the presence of 0-6 to 5 mol per cent of a primary secondary amine which does not boil at or below 245‹ C., and when most of the polymerization is complete, venting the system and placing it under inert gas or vacuum till the methanol extractables in the product have been reduced to less than 5 wt. per cent. The products have good heat stability, low extractable content, less than 30 meq./Kg. COOH ends, a R.V. of 1À7 to 3 (1 g./182À5 g. 96% H 2 SO 4  at 25‹ C.), and high affinity for acid dyes.
Patent GB-869248-A (GB)
Title: Automatic antenna coupler
IPC: H01F21/04
Filed: 1959-08-18
Abstract: 869,248. Automatic tuning and impedance matching control systems. COLLINS RADIO CO. Aug. 18, 1959 [Oct. 9, 1958], No. 28244/59. Class 38 (4). An automatic tuning and impedance match ing apparatus comprises an incoming line 1 from a tunable signal source 2, the incoming line 1 being connected to a resonant load 3 by way of a variable inductor 4 having two variable tappings 5, 6, the tappings 5, 6 being operated by servomotors 23, 24, respectively, which are controlled by means of a phasing discriminator 7 and a loading discriminator 8, the outputs of the discriminators being connected together by a circuit comprising resistors 11, 12, the connections between the discriminators 7, 8 and the servomotor controlling amplifiers 9, 10 including chopping-means such as a relay 25, the operation of the circuit being such that, at any instant, the discriminator developing the greater voltage is predominant in adjusting the tappings on the variable inductor 4. When the incoming signal is of low-frequency the antenna 3 appears mainly capacitive and requires a large current to provide radiation. Under these conditions the servomotor 23 operates to change the position of tapping 5. At high frequencies the antenna 3 appears mainly resistive whereupon tuning-of the load is more readily accomplished by having the servomotor 24 which controls the tapping 6 under the control of the disriminator 7. The relay 25 may be electromagnetic or thermionic. Specification 815,562 is referred to.
Patent GB-1256404-A (GB)
Title: 0-oxa-3,8-diazaspiro(4,5)decan-2,4-diones
IPC: C07D498/10
Filed: 1969-06-04
Abstract: 1,256,404. 1 - Oxa - 3,8 - diazaspiro[4,5]- decan - 2,4 - dione derivatives. DAINIPPON PHARMACEUTICAL CO. Ltd. 4 June, 1969 [7 June, 1968; 10 June, 1968 (2)], No. 28361/69. Heading C2C. Novel compounds I (including salts thereof) wherein R 1  is H, benzyl, R<SP>1</SP>(CH 2 )n- (R<SP>1</SP> is halogen, hydroxy or optionally halo-substituted benzoyl and n is 2 or 3) a Group III (R<SP>11</SP> is H, halogen, CF 3,  alkoxy, NO 2,  CN, alkylthio, alkyl, dialkylaminosulphonyl or acetyl and n is 2 or 3) or a Group IV or V (n is 2 or 3) and R 2  is H, optionally hydroxysubstituted-alkyl optionally halo-substitutedphenyl or benzyl, are obtained: (a) by interaction of VI and R<SP>1</SP> 2 NCO followed by hydrolysis of the intermediate VIII so obtained (R<SP>1</SP> 1  has same meaning as R 1  but is not H and R<SP>1</SP> 2  has same meaning as R 2  but is not H or hydroxy-alkyl and can also be benzoyl or alkanoyl); (b) by hydrogenating I in which R 1  is benzyl to afford corresponding I in which R 1  is H; (c) by alkylating I in which R 1  is H or R 2  is H; (d) by converting I in which R 1  is halogen(CH 2 )n- (prepared utilizing halogen- (CH 2 ) n -halogen<SP>1</SP>) into I wherein R 1  is the Group III, IV or V; (e) by reacting I in which R 1  is HO(CH 2 ) n  with R 4 COCl [R 4  is the group III less the (CH 2 ) n  fragment] and decarboxylating the intermediate R 4 COO(CH 2 ) n -compound so obtained; or (f) by utilizing the Mannich reaction on I in which R i  is H (the other reactants are formaldehyde or paraformaldehyde and p-Y-C 6 H 4 -COMe wherein Y is H or halogen) to afford I in which R 1  is p-Y-C 6 H 4 - CO(CH 2 ) 2 -. 1 - Benzyl - 4 - piperidone is obtained by interaction of benzyl isocyanate and 1-benzyl-4- cyano -4-piperidinol. Pharmaceutical preparations useful as psychotropic agents contain I as active ingredient; administration is, e.g. orally or intraperitoneally.
Patent GB-734033-A (GB)
Title: Improvements in the manufacture of corrugated tubes
Inventor: GAUL MAX
IPC: B21D53/02
Filed: 1952-11-12
Abstract: The thickness of wall of a finished rolled or hydraulically hammered corrugated tube, e.g. of tombac, is reduced at the arcuate faces by chemical action.  The corrugated tube may be compressed until the corrugations rest on one another and then treated with a mixture of nitric and sulphuric acids and sodium bichromate.
Patent GB-647622-A (GB)
Title: Improvements in linkages for the attachment of agricultural implements to tractors
Inventor: MERRITT HENRY EDWARD
IPC: B60D1/50
Filed: 1948-11-03
Abstract: 647,622. Agricultural implements. WOLSELEY MOTORS, Ltd. Nov. 3, 1948, No. 28519. [Class 6(i)] Means for controlling the lateral swing of the three-link draught connection at the rear of an agricultural tractor comprise a pair of telescopic adjustable struts E each pivoted, at one end M to one of the lower draught links A intermediate its ends, and at the other end to an anchorage H on the tractor, the anchorages H and the points of attachment of the links A to the tractor all being collinear. Each strut comprises a tube with a rod F slidable axially within it, the rod being of reduced diameter over part of its length and threaded to take a nut N which forms an adjustable abutment with the end of the tube. To minimise shock, a buffer P, comprising a rubber bush bonded on each side to a metal washer. is interposed between the nut and the tube end. To lock the linkage in the central position, a pin T may be inserted through aligned holes in tube E and rod F.