baber/WOPTO huggingface dataset:
Patent GB-432881-A (GB)
Title: Improvements in and relating to dental gold fillings
IPC: A61C5/00
Filed: 1933-11-30
Abstract: Spongy cohesive gold for dental fillings is prepared by precipitating gold from a solution, heating the precipitate in a high boiling liquid, such as concentrated phosphoric acid or commercial (unpurified) sulphuric acid, at a temperature between 150 and 250 DEG C., and washing and drying the precipitate.  In use, the tooth cavity need not be dried and the gold is inserted by means of an instrument moistened with a dilute antiseptic solution and is compacted by pressure and burnished.  Preferably, a gold chloride solution is neutralized by an alkali, heated to 80 DEG  C. and the gold precipitated by oxalic acid or sodium nitrite added in excess.  The solution and precipitate are then boiled and any gold remaining in solution is precipitated by addition of oxalic acid if sodium nitrite was used for the first precipitation or by addition of sodium oxalate or an alkali if oxalic acid was used. The pH of the solution should be between 6 and 7 at this point. The liquid is then decanted off and the precipitate washed in water, heated to between 150 and 250 DEG C. in commercial sulphuric acid, repeatedly boiled and washed with distilled water, and dried below 100 DEG  C.  The treatment of gold precipitated by formaldehyde, formic acid or hydrogen peroxide is also referred to.  Specification 380,324 is referred to.ALSO:Spongy cohesive gold for dental purposes is prepared by precipitating gold from a solution, heating the precipitate in a high boiling liquid, such as concentrated phosphoric acid or commercial (unpurified) sulphuric acid, to a temperature between 150 and 250 DEG  C., and washing and drying the precipitate. Preferably a gold chloride solution is neutralized with alkali, heated to 80 DEG  C., and the gold precipitated by oxalic acid or sodium nitrate added in excess. The solution and precipitate are then boiled and any gold remaining in solution is precipitated by addition of oxalic acid if sodium nitrite was used for the first precipitation or by addition of sodium oxalate or an alkali if oxalic acid was used.  The pH of the solution should be between 6 and 7 at this point.  The liquid is then decanted off and the precipitate washed in water, heated to between 150 and 250 DEG  C. in commercial sulphuric acid, repeatedly boiled and washed with distilled water, and dried below 100 DEG  C.  The treatment of gold precipitated by formaldehyde, formic acid or hydrogen peroxide is also referred to.  Specification 380,324 is referred to.
Patent GB-284310-A (GB)
Title: Improvements in or relating to sleepers for railway tracks
IPC: E01B3/16
Filed: 1927-12-12
Abstract: 284,310. Vereinigte Stahlwerke Akt.- Ges., (Assignees of Meiser, J.). Jan. 29, 1927, [Convention date]. Sleepers, metal, and securing rails thereto.-In metal sleepers a<2>, Fig. 2, with an imperforated bearing surface and a central trough a, the base of the trough is imperforated and the side walls are formed without recesses, projections f being provided for engaging the rail clips d<2>. The sides of the trough are inclined, and the head of the bolt is bevelled at two opposite edges to facilitate its insertion into the trough whilst preventing its rotation when in place. The Specification as open to inspection under Sect. 91 (3) (a) states also that the base of the trough may have an aperture to receive the bolt c<1>, Fig. 2 (Cancelled), or a lug on the rail clamp d<1>. The projections may be stamped from or welded to the sleeper, and may be formed in the base of the trough. This subject-matter does not appear in the Specification as accepted.
Patent GB-1172984-A (GB)
Title: Improvements in or relating to a Change-Speed Gearing and to Associated Control Means
Inventor: ABBOTT RANDLE LESLIE
IPC: F16H35/14
Filed: 1966-01-12
Abstract: 1,172,984. Variable-ratio gear and control. AUTO TRANSMISSIONS Ltd. 21 Nov., 1966 [12 June, 1966], No. 33801/69. Divided out of 1,172,982. Headings F2C and F2D. The subject-matter is substantially identical to that of Specification 1,172,982, and the claims are directed to a change-speed gear including a selector dog-clutch sleeve 68 (see Abridgment of Specification 1,172,982), axially slidable into synchromesh engagement with either of two sets of clutch teeth 64, 66, for selecting two different ratios, through springs 97, 98, by a toggle lever 102, which is loaded by a bias spring 125 to urge the control-lever 102 away from a single dead-centre position towards one or other of the gear-establishing end positions.
Patent GB-1240545-A (GB)
Title: Silver-containing therapeutic agents
IPC: A61K31/60
Filed: 1968-07-16
Abstract: 1,240,545. Ointments containing silver sulphadiazine. RESEARCH CORP. 16 July, 1968 [17 July, 1967], No. 33831/68. Heading A5B. An ointment for the treatment of burns comprises silver sulphadiazine and a carrier. The carrier may be an oil-in-water emulsion or a hydrophilic ointment base. Optional ingredients are (a) silver salicylate, (b) a silver salt of an antibiotic e.g. silver penicillin, silver cephalothin, silver colistimethate or silver tetracycline, (c) another silver sulphonamide such as silver sulphamerazine, silver sulphonanilide, silver sulphamylon, silver sulphathiazole or silver sulphapyridine, (d) an aqueous solution of chloride ions e.g. NaCl. Specification 1,240,546 is referred to.
Patent GB-946587-A (GB)
Title: Improvements in or relating to apparatus for measuring feet for boots, shoes and other footwear
IPC: A43D1/02
Filed: 1960-10-03
Abstract: 946,587. Foot measuring devices. W. G. SIMPSON, and L. M. JEFFERY. Sept. 27, 1961 [Oct. 3,1960], No. 33877/60. Heading G1X. Apparatus for measuring feet comprises a carrier 11 with a size scale 14,15 and a heel abutment 21, and a unit 18 slidable on the carrier and comprising a pallet 19 to engage the toe and a girth band 47 attached to the carrier and to the slide unit so that movement of the slide unit ensures variation in the peripheral length of the loop formed by the girth band. To the end of carrier 11 opposite the heel abutment is attached a last-shaped member 22 with a separate toe piece 29 connected to unit 18 by lengths of flexible inextensible spring rod 31. Thus movement of unit 18 adjusts toe piece 29 relatively to member 22. Members 22, 29 constitute on internal gauge for shoes. The girth band 47 comprises a flexible inextensible spring rod anchored to a block 48 secured to scale members 14, 15, and passing through guide 37 before forming the loop and being detachably received on one of three apertures in member 38. To provide further adjustment of the loop member 38 may be pivoted, and block 48 may be adjusted longitudinally and co-operate with a girth scale. Two girth bands may be fitted, e.g. one for children and one for adults, and the bands may be anchored to cross plate 36 and adjustably attached to member 22. The plate underlying the girth loop may bear a scale to measure the width of the foot. In use member 21 abuts the heel and slide 18 is moved until pallet 18 engages the toe, or the girth band closely engages the foot. Specification 703, 843 is referred to.
Patent GB-1177565-A (GB)
Title: Preparation of Phenoxyacetic Acids
Inventor: TULL ROGER JAMES
IPC: C07C51/09
Filed: 1967-07-24
Abstract: 1,177,565. Process for the preparation of phenoxyacetic acids and derivatives thereof. MERCK & CO. Inc. 24 July, 1967 [29 July, 1966], No. 33962/67. Heading C2C. A process for preparing a compound I (including salts, esters and amides thereof) wherein R is hydrogen or alkyl; the X radicals may be the same or different and represent hydrogen, halogen, C 1-5  alkyl, C 1-5  alkoxy or, taken together, two X substituents on adjacent carbon atoms of the benzene ring may be joined to form a hydrocarbylene chain containing 3 or 4 carbons between its points of attachment, comprises treating an intermediate compound II wherein R 1  is alkyl and R 2  is hydrogen or C 1-5  alkyl with a reagent capable of eliminating the alkanol, R 1 OH, therefrom; salts, esters and amides may be obtained by standard methods utilizing the free acids. 3 - Chloro - 2<SP>1</SP>,3<SP>1</SP> - dichloro - 4<SP>1</SP> - hydroxypropiophenone (obtained by treating 2,3-dichloroanisole with 3-chloropropionyl chloride in the presence of AlCl 3 ) is converted to the corresponding 3-methoxy compound which, in turn, affords ethyl [2,3 - dichloro - 4 - (3 - methoxy - propionyl) - phenoxy] acetate utilizing ethyl bromoacetate in the presence of sodium hydride. The propionyl compound treated with ethyl iodide in the presence of powdered sodium hydroxide is converted to sodium [2,3-dichloro-4- (2 - methoxymethylbutyryl)- phenoxy] acetate from which may be obtained the corresponding free acid by acidifying to Congo red. Further step-wise series (nine in all) of similarly related intermediates wherein the substituents R and (X) 2  are varied are also presented in table form. 2 - Chloromethyl - 2<SP>1</SP>,3<SP>1</SP> - dichloro - 4<SP>1</SP> - hydroxybutyrophenone, obtained by treating 2,3-dichloroanisole with 3 - chloro - 2 - ethylpropionyl chloride (prepared by the interaction of 2-ethylacrylic acid, hydrogen chloride gas and thionylchloride) in the presence of AlCl 3 , is converted to the corresponding 2-methoxymethyl compound which, in turn, affords ethyl [2,3-dichloro-4-(2- methoxymethylbutyryl) phenoxy] acetate utilizing ethyl bromoacetate and sodium hydride. This reaction series is also carried out using acrylic acid in place of 2-ethylacrylic acid.
Patent GB-1255730-A (GB)
Title: Improvements relating to recompression evaporation systems
Inventor: ROSENBLAD AXEL E
IPC: B01D1/28
Filed: 1969-07-07
Abstract: 1,255,730. Evaporation plant of the vapourcompression type. ROSENBLAD CORP. 7 July, 1969, No. 34051/69. Heading BIB. Liquor, e.g. wood-pulping spent liquors, at a temperature close to the boiling point thereof is introduced through line 15 into an evaporator 10 connected by conduits 19 and 27 to a compressor 24 which supplies compressed process vapours to the heating channels (formed by plates or tubes) in the lower part of the evaporator, and the partially concentrated liquor flows through conduit 17 into evaporator 35 which is heated by non-condensed vapour from the heating channels of evaporator 10. The non-condensed, vapour flows, together with condensate, from the heating channels of evaporator 10 through conduit 14 into tank 29; the separated vapour then flows through pipe 34 into the heating channels of evaporator 35. Condensate is discharged from tank 29 through valve 31 at such a rate that the liquid-level in the tank remains constant. The concentrated product liquor flows out of evaporator 35 through conduit 41. The vapours evolved from the liquor in evaporator 35 flow through pipe 42 to watercooled surface condenser 44 which is connected to a steam-ejector 49.
Patent GB-838278-A (GB)
Title: Improvements in or relating to commutators for electrical machines
IPC: H01R39/04
Filed: 1958-10-24
Abstract: 838,278. Making commutators. BOSCH G.m.b.H., R. Oct. 24, 1958 [Oct. 26, 1957], No. 34095/58. Class 83 (2). [Also in Group XXXV] The inner hub surface of a moulded commutator consists of a perforated metal sheet 18 rolled into a cylinder, the abutting edges 20, 21 being secured by lugs 24, 25 pressed out of one edge and overlapping the other, the union being secured by welding, preferably spot welding. Preferably, so that the lugs will not project over the periphery of the tube, both edges have complementary lugs 24, 25 and 28, 29 respectively engaging in pressed-out recesses in the other edge as shown. The lugs and recesses are each of a thickness equal to half the thickness of the sheet 18, and are formed by pressing the metal out of the recess to form the lug.
Patent GB-412118-A (GB)
Title: Improvements in water taps for wash-hand basins and the like
IPC: F16K1/02
Filed: 1933-12-05
Abstract: 412,118. Lift valves. SCHMIDT, H., 15, Bernerstrasse, Lichterfelde, Berlin. Dec. 5, 1933, No. 34176. [Class 135.] Water taps for washbasins in hospitals &c. have the rotatable handle m lying in the path of the supply and carrying the valve member c, which may be coned, as shown, or of leather washer type, and a tapped portion p<3> screwing into the casing b. Guiding-ribs a are provided below the valve member c, movement of which is limited by a screw s. The tapped portion p<9> may lie below the member c, in which case it must be recessed to allow passage of water and the ribs a are dispensed with. A recess d in the outlet tends to throw the water stream upon the handle m.
Patent GB-996615-A (GB)
Title: Articles for ornamentation, decoration or display and to methods of producing them
IPC: G09F3/04
Filed: 1960-10-06
Abstract: 996,615. Picture &c. mounts. C. R. A. OWEN. June 9, 1961 [Oct. 6, 1960], No. 34269/60. Heading A4X. [Also in Divisions B6, B8 and G5] A badge, sign, nameplate, plaque or other ornamental article comprises a section of sheet material 8, Fig. 5, bearing a design 11 and mounted on a resilient backing material 12, e.g. polyester foam and sealed within an envelope 13, 16, Fig. 8, of thermoplastic sheet material, e.g. P.V.C., the front face of the envelope being transparent and adherent to a smooth surface such as glass and the rear face of the envelope being provided with an adhesive coating covered by a removable protective backing 15. The design 11 is effected by a half-tone or line printing block having a design reproduced in a photo engraving process. In making the badge &c., the section of sheet material 8 with its resilient backing 12 is sandwiched between two sheets 13, 16 of P.V.C., which are welded together and cut adjacent the edges of the section, the protective backing sheet 15 being subsequently cut to conform with the shape of the envelope. Parts of the design may be tinted by dyes prepared by dissolving cellulose lacquer pigments in a solvent of amylacetate. The ornamental article may comprise a door finger plate or light switch cover.
Patent GB-1006721-A (GB)
Title: Improvements in or relating to shipping containers
IPC: B29D22/00
Filed: 1961-09-25
Abstract: 1,006,721. Plastics barrels. H. HECKEN, and A. URBAN. Sept. 25, 1961 [Sept. 23, 1960], No. 34280/61. Heading B8D. [Also in Division B5] Barrels are made by applying a low pressure synthetic resin to the surfaces of an outer mould member and an inner flexible mould member such as a pressure bag, these surfaces being preferably penetrated with release agent, allowing the resin to gel, coating the pregelled layers with a second low-pressure resin, applying a layer of glass fibres, such as a mixture of glass mat and rovings, between the mould members, and pressings, as by inflating the bag, at normal or elevated temperature. The outer mould member has a removable cover. Integrally formed rims and circumferential protuberances facilitating rolling may be covered by rubber rings. The resins employable are polyesters and copolymers thereof, epoxy resins, polyurethanes and silicones, together with peroxides, cobalt naphthenate, amines, anhydrides and fillers, e.g. silica as additives. In an example compositions comprising polyester monomer and polymer mixtures were used containing respectively (a) silica, benzoyl peroxide and cobalt naphthenate, and (b) cobalt naphthenate only. The inner layer of the container however may be a silicone resin.
Patent GB-181400-A (GB)
Title: Improvements in and relating to signalling systems, especially radio communication
IPC: H03B19/10
Filed: 1920-12-04
Abstract: 181,400. Taggart, J. Scott-. Dec. 4, 1920. Frequency, changing. - The difference in frequency between desired and undesired signals of continuous wave form, whether of high or low frequency, is increased at the receiver for the purpose of lessening interference. The signals may be made to produce a harmonic frequency by the use of a triode valve working near its saturation point in conjunction with a circuit tuned to the harmonic, or a valve with a peaked characteristic may be used. In the example shown, the circuit L2, C2 tuned to the received signals is connected to the anodes A1, A2 of the double-anode valve V. The mid-point of the inductance L2 is connected through the circuit L3, C3 tuned to double the frequency of that of the circuit L2, C2 to the filament F1, so that double-frequency signals are produced in the circuit L4, C4.
Patent GB-373200-A (GB)
Title: Improvements in or relating to electric gaseous discharge tubes
IPC: H01J17/00
Filed: 1930-11-15
Abstract: 373,200. Discharge lamps. CLAUDE NEON LIGHTS, Inc., 41, East 42nd Street, New York, U.S.A.-(Assignees of Noble, A. E. ; 46, Nassau Boulevard, Lynbrook, Long Island, New York, U.S.A.) Nov. 15, 1930, No. 34404. Convention date, Nov. 15, 1929. Drawings to Specification. [Class 39 (i).] To increase its life and efficiency a positive column discharge lamp has a filling of helium at from 3 to 5 mm. of mercury and operates with a cold cathode coated with barium peroxide which has been reduced by heat to a suboxide. The cathode is a hollow cylinder closed at one end and may be of iron, copper, nickel, carbon or other conducting substance coated as above, and in lamps for use on alternating currents both electrodes are coated. The envelope or tube may be of yellow glass to assist in the emission of yellow light. The Specification as open to inspection under Sect. 91 (3) (a) discloses the coating of the cathode with oxides, or derivatives thereof, of electropositive metals such as elements of the alkaline earth group, e.g. calcium and strontium. The coating is obtained by heating a suitable oxygen compound of the metal to reduce it to the sub-oxide. Alternatively, the cathode may be coated with strongly electropositive elements including those in the alkali group such as potassium, caesium, and the like. Moreover other rare gas fillings may be used. This subject-matter does not appear in the Specification as accepted.
Patent GB-1036226-A (GB)
Title: Method of making models, for example, for the automobile industry
Inventor: BRIGHT WILFRED
IPC: B29C33/38
Filed: 1964-08-22
Abstract: 1,036,226. Models. FORD MOTOR CO. Ltd. Dec. 16, 1964 [Aug. 22, 1964], No. 34448/64. Heading B3B. [Also in Division B5] A method of making a master model from a styling body 3 for use in making dies and other tools comprises making a plastic mould 1 from the body and then making a solid plastic master model from the mould. A mould 1 is formed of a rear quarter panel of the clay styling model 3 by applying successive layers of a parting agent 5, polyester resin 7, resinimpregnated scrim 9, resin-impregnated matting 3 and block board 12. Shuttering is built up round the mould and on to the mould is poured a carvable epoxy resin: the resin is cured and the resulting plastic model 14, Fig. 5 (not shown), is attached to a support 15, Fig. 6 (not shown), consisting of a structure of panels of honeycomb aluminium material having sheet aluminium sides 17 and joined to each other by resin-soaked scrim 18. The support is attached by resin-impregnated glass laminate. Adjustable feet 29, Fig. 11 (not shown), are fitted in each corner of the support. With the feet standing on a datum surface and adjusted, the feet are locked by being coated with resin and the surface of the model is worked on by woodworking tools until it corresponds with drawings prepared from the clay model. The finished modal is then " cubed " with other models of the other parts of the vehicle and moulds are made from each master model. The latter moulds are made by coating the model with silicone wax and with resin-impregnated material to form a glass fibre master mould. The master mould is supported by a structure and adjustable feet as was the model 14. Master models are made from the master mould for use in making machine tools, such as stamping- dies, by copy-machining. To make a hammerform model for panel-beating, a mould is made by coating a master model with impregnated layers and a plastic backing 44, Fig. 15 (not shown). A birch body 42 is then held spaced from the mould and plastic is poured in. The plastic adheres to the birch body to produce the hammer-form.
Patent GB-1006519-A (GB)
Title: Fluid flow restrictor valve
Inventor: SMALLPEICE COSBY DONALD PHILLI
IPC: F16K17/34
Filed: 1963-09-02
Abstract: 1,006,519. Valves. MARTONAIR Ltd. Sept. 2, 1963, No. 34567/63. Heading F2V. A regulating valve of the kind which tends to close by increased flow past the valve member causing a pressure difference thereon, comprises an annular passage 12 defined by an outer wall 13 and an inner wall 14 which diverges radially in the direction of flow " A " so that the crosssection of the passage diminishes progressively' and a resilient expandible sealing ring 17 of circular section mounted on the inner wall which moves downwardly whilst expanding in diameter to restrict the passage when flow increases. The ring can seat on both walls to close flow ports 16. In a modification, the arrangement of walls is duplicated symmetrically about a central plane of the ring whereby the valve acts in either direction of flow. In another embodiment, Fig. 5, (not shown), the device is combined with an independently adapted poppet valve having a stem which passes sealedly through a tubular member on which the diverging inner wall is formed.
Patent GB-366177-A (GB)
Title: Improvements relating to boot uppers
IPC: A43B3/02
Filed: 1930-11-18
Abstract: 366,177. Top boots. MOBBS BROS. (EMBEKAY), Ltd., Durban Road, and WRIGHT, N. E., 64, William Street, both in Kettering, Northamptonshire. Nov. 18, 1930, No. 34697. [Class 17 (ii).] The forward meeting edges a of the upper b of a highlegged lace-up boot have one or more incisions c extending for a short distance towards the ankle to make the upper more elastic. The incisions may extend between adjacent eyelets, and a tongue d of greater width than usual is provided to exclude moisture at the locality of the incisions.
Patent GB-509290-A (GB)
Title: Improvements in or relating to the production of rubber footwear
IPC: B29D35/00
Filed: 1938-11-29
Abstract: 509,290. Rubber footwear ; casting composite articles. RUBO FOOTWEAR PROPRIETARY; Ltd. Nov. 29, 1938, No. 34728. Convention date, Dec. 10; 1937, [Class 70] [Also in Group XXII] A vulcanizing-mould for forming rubber footwear comprises supplemental mould sections 6, 7 having steam pipes 10 moulded therein, the steam pipes following the contour of the recesses which reserve the last 9 and the sole and heel pressure plate 9a. The pipes 10 suitably bent are coated with plumbago and supported in the sand moulds during the casting of the parts 6, 7. Specification 459,010 is referred to.