baber/WOPTO huggingface dataset:
Patent GB-518180-A (GB)
Title: Improvements in or relating to apparatus for preventing ice accumulation on surfaces, for example, surfaces of travelling aircraft
IPC: B64D15/16
Filed: 1938-08-16
Abstract: 518,180. Preventing ice formation. GOODRICH CO., B. F. Aug. 16, 1938, No. 24181. Convention date, Aug. 20, 1937. [Class 4] Extensible shoes mounted on a surface to prevent accumulation of ice thereon are locally strengthened by spaced extensible strips so as to confine possible tearing to the areas between the strips. The shoes, which are of the kind comprising intermittently inflatable tubes as disclosed for example in U.S.A. Specification 1,998,809 are described applied around the leadng edges of the wings, fin and tail plane of an aeroplane. Normally' flat tubes 25, 26 of biascut fabric coated with rubber are enclosed between rubber sheets 23, 27 filling strips 33 preventing abrupt changes of contour. A series of longitudinally extensible strips 34 with turned over edges are rubber impregnated and cemented between the tubes 25, 26 and the sheet 27. The edges of the sheets 23, 27 are cemented to inextensible fabric 32 overlapping the strips 34. Filling strips 35 are provided at the edges of each strip. The shoe is stretched over the leading edge of the wing &c. and is secured by screws passed through metal fairing strips 31. The ends of the covers are cemented to extensible strips which may be shaped to support the ends of the tubes 25, 26.
Patent GB-722765-A (GB)
Title: Improvements connected with swaging machines
IPC: B21J13/12
Filed: 1953-09-11
Abstract: 722,765. Forging-machines. SMITH, S. Sept. 11, 1953 [Sept. 29, 1952], No. 24298/52. Class 83 (4). A swaging machine having a number of dies radially slidable in a fixed head and actuated by a rotatable fly-wheel surrounding the head, has combined therewith a feed mechanism comprising a rotatable cage 12 containing one or more pairs of rollers 15, 15<SP>1</SP> rotatably mounted on transverse axes and driven from the rotatable cage, the workpiece 9 being gripped between each pair of rollers whereby it is fed axially whilst being rotated about its longitudinal axis. The rollers have grooved peripheries and are driven through meshing gears 16, 161 by worms 18, 18<SP>1</SP> mounted on a shaft 17 carrying a planet gear 19 meshing with a stationary gear 20 on the frame of the feed mechanism. Alternatively a V-belt drive may be used instead of the planet gearing. A feed mechanism may be mounted on both the input and output ends of the swaging machine, both mechanisms being driven from a common electric motor by V-belts. Specification 622,389 is referred to.
Patent GB-443159-A (GB)
Title: Apparatus for copying photographic sound records
IPC: G03B27/10
Filed: 1934-08-23
Abstract: 443,159. Photographic sound-record films. GROVES, W. W., 30, Southampton Buildings, Chancery Lane, London.-(I. G. Farbenindustrie Akt.-Ges. ; Frankfort-on-Main, Germany) Aug. 23, 1934, No. 24339. [Class 98 (ii)] Apparatus for printing sound-record films by contact comprises a wheel round which the original film and the sensitive film travel during printing, a light - source at the centre of the wheel and an annular lens system surrounding the light-source between the centre and the periphery of the wheel, so that the printing light falls on the films substantially perpendicularly to their direction of movement. As shown in section in Fig. 1, light from a source 4 at the centre of the wheel 1 round which the films 2 and 3 pass is directed upon the films by an annular condenser 5. If a broad wheel is used the films may be passed helically round the wheel. The periphery of the wheel is transparent; but if only the sound track is to be copied from a combined sound and picture film, the wheel may be transparent only in the region of the sound track, or it may be opaque and narrower than the films so that the sound track region projects beyond the edge. Contact of the films may be ensured by pressure rollers or by a band, as of metal, moving with the films, which band may have a reflecting surface to intensify the printing light. In a modification, elliptical mirrors 7, Fig. 3, formed as surfaces of revolution with a focal point and a focal line are placed at the sides of the wheel so that the focal point of each coincides with the light source, and the focal line coincides with the periphery of the wheel.
Patent GB-1492202-A (GB)
Title: Immunodiffusion
IPC: G01N33/559
Filed: 1975-06-06
Abstract: 1492202 Immuno diffusion plate BAXTER  LABORATORIES Inc 6 June 1975 [21 June 1974] 24364/75 Heading G1B An immuno diffusion plate for use in determination of low levels of protein in blood serum comprises a plate and on the plate gel medium comprising from 0À1% to 5% agar and/or agarose and from 0À5% to 5% of a block copolymer having the formula HO(C 2 H 4 O) b (C 3 H 6 O) a (C 2 H 4 O) b H where a is an integer such that the (C 3 H 6 O) a  portion has a molecular weight of at least 950 and b is an integer such that the (C 2 H 4 O) b  constitutes from 50 to 90 wt. per cent of the compound. The visibility of the precipitin rings produced by the IgE-antigen-antibody reaction in radial immuno diffusion is enhanced when the plate is used. Similar gel plates used in immuno diffusion comprise, instead of agar and/or agarose, gelatine, pectin, silica gel, starch, algin, carrageenin, crosslinked polysaccharide and known cross-linked polyamides and modified celluloses, agars and agaroses.
Patent GB-1438181-A (GB)
Title: Brake disc assemblies
Inventor: ASBERG S L
IPC: F16D65/12
Filed: 1973-05-22
Abstract: 1438181 Spot-type disc brakes SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 22 May 1973 [23 May 1972] 24381/73 Heading F2E A combined brake disc and rolling bearing for a vehicle comprises a pair of bearing races 3, 4, each having an integral radial flange, an annular series of rolling elements 5 and a connecting member 8 releasably securing the brake disc 1 to the flange 6 on one bearing race 4, the connecting member 8 comprising a shank portion having a head 12 at one end, a fixing portion 13 at or adjacent its other end for fixing the member to the flange (as shown) or the brake disc, and a guide portion 9 between the head and fixing portion, the guide portion having guide surfaces 10, 11 of a predetermined configuration to mate with co-operating guide surfaces 10a, 11a provided in the brake disc (as shown) or the flange to allow limited radial movement of the brake disc relative to the flange. As shown, fixing portion 13 is threaded and a nut may be applied; the co-operating guide surfaces are provided in a radial recess 7. In Figs. 3, 4 (not shown) the guide portion is a separate member on a circular- or polygonalsection shank. In Figs. 5, 6 (not shown) the connecting member points the other way and its guide portion is located in an opening in flange 6 having a radial length greater than that of the guide portion.
Patent GB-1505396-A (GB)
Title: Process for producing formaldehyde
IPC: B01J37/20
Filed: 1975-06-06
Abstract: 1505396 Dehydrogenation catalysts MITSUBISHI GAS CHEMICAL CO INC 6 June 1975 [7 June 1974 26 Dec 1974] 24439/75 Heading BIE [Also in Division C2] Dehydrogenation catalysts comprise copper, zinc and sulphur in an atomic ratio of 1:0.001- 0.1 : 0.001-0.3 respectively. The whole or part of the sulphur may be provided as SO 2  or H 2 S during the reaction.
Patent GB-962736-A (GB)
Title: Rodenticidal compositions
Inventor: SHAPERO MAURICE
IPC: A01N25/00
Filed: 1961-07-07
Abstract: A rodenticidal composition comprises a rat bait base, an anticoagulant rodenticide and an alkali metal glutamate.  The rodenticide is generally a coumarin or indane derivative, for example, a 3-(a -phenyl-b -acyl)ethyl-4-hydroxycoumarin, wherein the a -phenyl group may contain nuclear substituents, e.g. halogen or a nitro group, a 3-(a -hetermonocyclic b -acyl) ethyl-4-hydroxycoumarin, or an aryl or acyl substituted indane dione. Rodenticides specified are 3,31-methylene bis-(4-hydroxycoumarin), 3 - (a  - para - chlorophenyl - b  - acetyl) ethyl-4-hydroxycoumarin, 3-(a -phenyl-b -acetyl) ethyl - 4-hydroxycoumarin, 3 - [a  - (21 - furyl-) b  - acetyl]ethyl - 4 - hydroxycoumarin and 2.2 - bis - (methylpropiolyl) - indane - 1,3-dione.  The glutamate salt is preferably a mono-alkali metal salt, e.g. monosodium glutamate. The bait may be a cereal product, e.g. fine oatmeal or sausage rusk.  The composition may also contain a tracer dyestuff.
Patent GB-1427223-A (GB)
Title: Process for purifying acrylic acid
IPC: C07C51/48
Filed: 1973-05-23
Abstract: 1427223 Acrylic acid SUMITOMO CHEMICAL CO Ltd 23 May 1973 [24 May 1972 (2)] 24650/73 Heading C2C Acrylic acid is separated from a mixture with acetic acid and water by distilling in admixture with a two component organic solvent consisting of a solvent which forms an azeotrope with acrylic acid, acetic acid and water, and a second solvent with a boiling point lower than acetic acid in a weight ratio of first to second component of 1 : 9 to 9 : 1. The mixture is fed to a first distillation column (18) at a pressure not exceeding 300 mm.Hg absolute, to give a bottom fraction of the first component with increased acrylic acid and reduced acetic acid content, and as a second component at the top, a portion of the first component, water and about 10% of acrylic acid with acetic acid; then the distillate is fed to the middle stage of a second distillation column (19) at not above 300 mm.Hg absolute to obtain the second component and water as top distillate and acetic and acrylic acid and first component from the bottom; then the bottoms are fed to a middle stage of a third distillation column (21) to obtain acetic acid and the first component from the top, and acrylic acid and the first component from the bottom, which is fed to the first distillation column or combined with bottoms of first column; the bottoms from the first column are fed to the top of a fourth distillation column (42) using water as entrainer to give water, first component and acrylic acid from the top as distillate and acrylic acid from the bottom; the top distillate from the fourth column is separated into an oil layer and aqueous layer; the oil layer is fed to an extraction column (46) with water as extracting agent to recover the first component as raffinate and refluxing the resulting aqueous acrylic acid after combination with the aqueous decanted layer. Ethyl benzene, o-, m-, and p-xylenes or octane may be the first component, methylethyl ketone, methyl acetate or ethyl acetate may be the second component.
Patent GB-1014566-A (GB)
Title: Process for the production of acid ammonium fluoride in anhydrous solid state
IPC: C01C1/16
Filed: 1962-06-27
Abstract: Acid ammonium fluoride having a HF/NH3 molar ratio of 1.50 to 2.10 is prepared by mixing at 230-240 DEG  C. anhydrous HF gas with NH3 gas in the desired molar ratio, the latter being maintained constant within a maximum tolerance of 1% based on the total flow of the reactants, condensing the resulting gaseous reaction product, and cooling the molten condensate, which is maintained at a temperature between the melting point of the solid product and 170 DEG  C., on a surface kept at a temperature not exceeding 100 DEG  C.  The temperature of between 230-240 DEG  C. may be maintained solely by the heat of reaction at ambient pressure. The reactant gases may be contacted at the intersection of two tubes, one horizontal, the other vertical.  The reaction mixture is condensed in a suitable heat-exchanger and passed into a vessel maintained at a temperature slightly in excess of the melting temperature of the product.  A rotating cylinder may be arranged inside, the surface of which is cooled by water flowing within.  The product is solidified on the cylinder surface, removed therefrom by cutters and collected by gravity feed through a hopper in storage bins.
Patent GB-699960-A (GB)
Title: Electric grilling appliances
IPC: A47J37/06
Filed: 1950-10-10
Abstract: 699,960. Electric grills. CANNON INDUSTRIES, Ltd., and OATLEY, A. F. Oct. 2, 1951 [Oct. 10, 1950], No. 24683/50. Class 28 (i). [Also in Group XI] An electric grill 8 is mounted so that it can be pivoted up from a vertical stowed position to a horizontal grilling position where it is automatically locked by a spring catch 28. The grill may be an independent unit or may be pivoted between side uprights 9 of a gas or electric cooker. The grill may be coupled by a link 37 and pin and slot 40, 39 to a hinged shelf which is automatically pivoted down to dish-supporting position where the grill is raised to grilling position. When the grill is lowered to vertical stowed position the shelf pivots up also to stowed position alongside. Such pivoting up may also be used to switch on current to the heating coils 11. The grill coils 11 are mounted in grooves 12 in a refractory backing 13 or a reflecting backing supported in a cover 17 provided with trunnions in the brackets 9. One trunnion 16 is a tube through which pass the conductors to an electric switch 18. A fuse is provided. The grill is locked in the horizontal position when a disc 30 on the trunnion 16 is rotated to such a position that the catch 28 can drop' into the radial slot extensions 31 of an arcuate slot 29, Fig. 5. To pivot the grill down to vertical position the bell crank 27 is thumbpressed to pull 28 out of 31 to allow pivoting down. The rotary switch 18 is prevented from being switched on while the grill is in stowed position by the same catch 28 which, located in a slot 35 of a disc 34 on an extension shaft 33 of the switch, thereby holds the switch shaft against rotation. When the switch is on, the grill cannot be lowered to stowed position since the disc 34 holds the catch up into the outer part of the slot 31 thus preventing pivoting down. Fig. 6 shows an additional safety breaker in which contacts 45 rotating with the disc 30 make contact with switch contacts 46 only when the grill has been pivoted into grilling position. Specification' 675,974, [Group XI], is referred to.
Patent GB-361327-A (GB)
Title: Improvements in combined vulcanising and extrusion-apparatus for covering wires
IPC: B29C48/06
Filed: 1930-08-18
Abstract: 361,327. Covering wires &c. by extrusionmachines; vulcanizing. WESTERN ELECTRIC CO., Ltd., Bush House, Aldwych, London.-(Bell Telephone Laboratories, Inc. ; 463, West Street, New York, U.S.A.) Aug. 18, 1930, No. 24704. Addition to 361,326. [Classes 70 and 87 (ii).] In apparatus for covering two or more wires by extrusion with a common coating of rubber and then vulcanizing as in the parent case, a differential capstan is used to feed the new reel of wire whenever a reel is exhausted. Wire from the reels 13, 15 is passed round a drum 50, through the extrusion chamber 9 and vulcanizing chamber 16, finally passing to a storage drum 20 round a driven capstan 19. Normally both wires are passed round the part 51 of the drum 50, but the first length from a new reel is run round the larger portion 52 to deliver it through the extrusion and vulcanizing machines at a faster rate than the other wire, thus minimizing the strain on the coating at the section containing only one wire. Hand-operated lever apparatus is provided for confining the wires to the particular sections of the drum desired and for releasing them at will, the natural tendency of both wires being to return to and remain on the part 51. The capstan 19 drives the drum 50 through the strain on the wire. The seal at the end of the vulcanizing chamber comprises rubber discs 22 contacting with the wire and held against the end of the chamber by a member 25 mounted in a screw cap 21 and pressed inwardly by a bel crank 26 actuated by compressed air. The extrusion die 31 and core tube 35 are mounted in a cylindrical bore in a cylinder 39 formed with two unequal flattened surfaces so that it fits one way only into the end of the screw chamber 9. A member 40 engages lugs on both members 31, 35 and positions them within the bore. The core tube has curved directing surfaces towards its forward end and a central fin 36 to assist in the even distribution of the material round the wires. A gasket 34 of soft metal or of asbestos saturated with graphite prevents leakage at the inner end of the vulcanizing chamber.
Patent GB-1071611-A (GB)
Title: Process for producting ferrites
Inventor: SHICHIJO YUZO
IPC: C04B35/26
Filed: 1964-06-15
Abstract: 1,071,611. Magnetic compositions. SUMITOMO SPECIAL METALS CO. Ltd. June 15, 1964, No..24761/64. Heading H1H. In the manufacture of spinel ferrites the sintering is performed in two stages; in the first stage sintering takes place in a reducing atmosphere such as to produce a ferrite deficient in oxygen, and in the second stage sintering takes place in a more oxidizing atmosphere. The ferrites may be simple or mixed ferrites of Mn, Ni, Cu, Mg, Zn, Cd, Co, and Fe and may contain up to 0.035% by weight of CaO, Al 2 O 3 , TiO 2 , ZrO 2 , Li 2 O, BeO, MgO and B 2 O 3  and up to 3.5% by weight of In 2 O 3 , Sb 2 O 3 , SnO, Bi 2 O 3,  As 2 O 3  CeO 2  and CuO. The sintering may take place in a N 2  atmosphere containing O 2 , the first stage being at 800‹ C.-1400‹ C. in an atmosphere having a partial pressure of oxygen between 10<SP>-6</SP> mm. Hg and 10 mm. Hg, and the second stage being performed at a higher temperature between 1000‹ and 1500‹ C. and at an increased pressure of 10<SP>-4</SP> mm. Hg to 200 mm. Hg. Cooling takes place at a pressure less than 40 mm. Hg. Specific examples of the manufacture of MnZn ferrite Mn Zn Cd ferrite, Ni Co ferrite, Mg ferrite and Cu Zn ferrite with various additions are disclosed.
Patent GB-789297-A (GB)
Title: Improvements in or relating to heat-hardenable resinous compositions containing epoxide resins
Inventor: BARNETT GEORGE
IPC: C08L63/02
Filed: 1954-08-25
Abstract: Epoxide resin compositions which harden at clevated temperatures in the absence of polymerization catalysts or hardening agents to form light coloured tough chemical resistant films consist of an epoxide resin and an unsaturated polyester resin obtained by reacting a polyhydric alcohol with an a ,b -unsaturated polycarboxylic acid or enhydride or a Diels-Alder adduct thereof.  Mixtures of unsaturated acids and saturated acids, e.g. phthalic, succinic, benzoic, stearic, oleic, or ricinoleic acids may be used.  Polyhydric alcohols specified are glycerol and glycols.  Preferred ratios of epoxide resin to unsaturated polyester are from 5 : 1 to 1 : 5.  An epoxide resin sold as "Epikote 1009" (Registered Trade Mark), was dissolved in a mixture of 2 parts "Cellosolve" (Registered Trade Mark) and 1 part solvent naphtha and was added to a solution in the same solvent of a polyester resin having an acid value of 25 mg. of KOH per gm. resin and obtained from cyclopentadiene maleic anhydride adduct and triethylene glycol, 5 part epoxide resin being used per 1 part polyester resin.  A glass slide coated with the resin solution and stoved at 200 DEG  C. for 30 minutes was unaffected by immersion in boiling cellosolve acetate.  Reference has been directed by the Comptroller to Specification 735,531.
Patent GB-536055-A (GB)
Title: Process for the fractional separation of mixtures comprising vapourous and gaseous hydrocarbons
IPC: C10G7/02
Filed: 1939-08-29
Abstract: 536,055. Fractionating and stabilizing cracked gasoline distillates. UNIVERSAL OIL PRODUCTS CO. Aug. 29, 1939, No. 24836. Convention date, Aug. 31, 1938. [Class 32] In the stabilization of condensed cracked gasoline fractions containing dissolved gases to recover stabilized gasoline and propane-propene and butane-butene fractions suitable for use as polymerization stock and " bottled gases," valuable hydrocarbons contained in the gases set free during the process are recovered by washing the gases with an absorber oil, other than that employed in Specification 536,084, and returning the thus enriched absorber oil to the stabilization step or to the initial materials to be treated. The products from the cracking process are passed through line 1 into fractionating tower 3 where they are separated into gases and vapour of gasoline range taken off through line 12 and a reflux fraction taken off through line 6. The vapours and gases are cooled by passage through heat exchanger 14 and cooler 17 and a condensate containing dissolved gases is collected in receiver 20 where it is separated from undissolved gases taken off through line 21. The condensate is then passed through heat exchanger 14 into the first stabilizer tower 34 where the light gas fraction is separated off through line 35. The partially stabilized fraction is then passed through line 45 and heat exchanger 47 into the second stabilizer tower 56 where it is re-boiled in heat exchanger 76 to remove a heavier gas fraction which is recovered through line 57 and cooler 59 to separator 62 from which the condensate is removed through lines 68, 73 to a polymerization plant. The stabilized gasoline is removed through line 83, heat exchanger 86, line 89 to tower 91 where it is fractionated into relatively low boiling and high boiling fractions, the low boiling fraction being recovered through line 123 and cooler 125 to separator 128 while the high boiling fraction is recovered through line 113, and re-boiler 115, line 118, heat exchanger 110, 120 and line 121 from which it is removed from the plant or alternatively is passed too heat exchanged 100. The rich constituents of the gases liberated from separators 20, 62 and 128 are recovered by passing the gases through lines 23, 63. 131 respectively to an absorber tower 65 to which oil is admitted through line 101 the clean gases passing off through line 103. The absorber oil used for this purpose comprises the relatively high boiling gasoline fraction (a) recovered from the bottom of tower 91 or (b) the fraction recovered from tower 3 through line 6 and passed through heat exchanger 86 into heat exchanger 100. The enriched oil is passed through line 105 heat exchanger 110 and line 95 (a) through line 141 into the tower 34 or (b) through line 96 back to the tower 3.
Patent GB-296374-A (GB)
Title: Improvements in or relating to regenerative water-gas producers
IPC: F28D17/04
Filed: 1928-08-30
Abstract: 296,374. Gas und Teer Ges. Aug. 30, 1927, [Convention date]. Gas-heating furnaces.-In a regenerative watergas producer a number of pairs of chambers 1, 1<a> - - 4, 4a adapted to be changed over successively are arranged in a circle as shown, or side by side, and communicate at their upper ends with an outlet passage 6 for the generated watergas and through valve-controlled pipes 12 with a common air-supply conduit 16. Each chamber is provided at its lower end with a pipe 7 which by the operation of valves 10, 11 may be made to communicate either with a common supply conduit 14 or with a common waste-gas outlet conduit 15. To the conduit 14 is supplied part of the generated water-gas with steam and pulverized coal or other carbonaceous fuel added. Fig. 1 shows the course of the gases &c. for the pair of chambers 1, 1<a>, part of the gas produced in the chamber 1 passing out through the passage 6 for use and part passing to the chamber 1<a> where it burns with the air supplied to heat the chamber. The valves for the pairs of chambers are changed over successively at regular time intervals so that a continuous supply of watergas is obtained at the passage 6.
Patent GB-208231-A (GB)
Title: Improvements in domestic washing appliances
IPC: D06F1/08
Filed: 1922-09-14
Abstract: 208,231. Robinson, H. Sept. 14, 1922. Washing-boilers.-In a washing-boiler 1 provided with a circulator comprising a tubular member 4 fitted with a distributor 6, the bellmouthed false bottom 4<a> of the member 4 is mounted on a stand formed by bending a wire into a spiderlike structure provided with legs 7<c> and feet 7<d>. The stand may be fixed to the bottom 4<a> and held in position by clips 9 mounted on the boiler, as shown in Fig. 2, or alternatively the stand may be fixed to the boiler and the clips 9 may be fitted to the false bottom 4<a>, as shown in Fig. 6. The boiler may be heated by an open fire, gas, oil, or electricity.