baber/WOPTO huggingface dataset:
Patent GB-265277-A (GB)
Title: Improvements in and relating to steam and other fluid pressure engines
IPC: F01B17/04
Filed: 1925-11-02
Abstract: 265,277. Hider, G. E. Nov. 2, 1925. Cylinder-ends, putting into communication. - A cylinder has exhaust ports controlled by the piston and separate exhaust valves. The exhaust passages are connected to a bye-pass chamber with camoperated valves which are raised to connect the cylinder ends when the exhaust valves are closed to enable expanding fluid at terminal pres. sure to pass from one end of the cylinder to the other where it is compressed prior to the admission. The ports 2, 2<1> are controlled by the piston 3. and the exhaust passages 6, 6' leading therefrom, by valves 7, 7<1>. The bye-pass chamber 9 contains simultaneously-operated valves 10 which engage a double, rocking-lever 15 engaging a cam 13 on the valve shaft 14. The upper part 9<1>, 9<2> of the chamber 9 is connected with the upper parts of the exhaust-valve chests 5, 5'. On raising the valves 10, the cylinder ends communicate through the ports and passages 2, 2', 6, 6<1> and chamber 13 in the chamber 9. The chamber 9 may be connected to the valve chests 5, 5' through convergent-divergent nozzles to induce a higher velocity in the pressure fluid.
Patent GB-998452-A (GB)
Title: Improved arrangement for a grease pump
Inventor: SVENSSON BENGT GUSTAF INGVAR
IPC: F16J15/32
Filed: 1963-07-11
Abstract: 998,452. Grease pumps. FABRIKEN ORION ERIK WIREN & SON A.B. July 11, 1963, No. 27550/63. Headings F1A and FIR. [Also in Division F2] In a grease pump of the type in which grease may be loaded in an unpacked state directly into the pump casing, or in a packed state in a grease tube and advanced by a spring-loaded piston, usually a sleeve of resilient elastic material, the piston is open in the feeding direction and comprises a bottom plate 2 and an annular flange 3 conically widening with a positive angle in the feeding direction, and the flange at its front portion 5 tapers conically with a negative angle to enable the piston to penetrate sealingly both into the pump casing 1 and the grease tube inserted therein, although the casing and grease tube have different diameters. The piston is preferably of synthetic rubber of a hardness of 55-70 degrees Shore. The thickness of the cross-section of the flange 3 increases from the bottom plate 2 to a point 4 to prevent distortion of the piston, and the length of this part of the flange cross-section is at least one-fifth of the casing internal diameter. The bottom plate 2 may be of uniform thickness. In order to provide a seal between a piston rod 7 and a hole 8 in the bottom plate 2, one side of the latter is provided with a lip 12 from which the hole 8 widens conically, either uniformly or in steps. Alternatively, the wall of the hole 8 may be provided with an annular bead, preferably of semi-circular cross-section.
Patent GB-761462-A (GB)
Title: Improvements in or relating to the production of liquid drying oils
IPC: C08F36/06
Filed: 1953-10-08
Abstract: <PICT:0761462/IV(a)/1> Butadiene drying oils are produced by continuously subjecting impure butadiene to vigorous agitation in the presence of a finely divided alkali metal catalyst and then continuously passing the effluent into an elongated quiescent reaction zone of volume sufficient to allow a residence time of 5 minutes to 5 hours, and withdrawing from the opposite end reaction mixture in which the unreacted butadiene has been reduced by at least 50 per cent and is not more than 1.5 per cent by weight.  The feed may be the C4 fraction from the catalytic cracking of petroleum hydrocarbons or the catalytic dehydrogenation of n-butane, e.g. a butylene/butadiene mixture, and the method may be used for obtaining a purified butylene.  Acetylenes should be removed from the feed prior to the operation.  Catalysts specified are sodium, potassium, lithium and their alloys with each other or calcium, and these are dispersed in an inert medium, as specified below, optionally with dispersion stabilizers such as t-dodecyl mercaptan or carbon black. The butenes present act as solvent but additional solvents may be added to the primary reactor or to the quiescent zone, e.g. n-butane, n-pentane, n-hexane, n-heptane, iso-octane, glyco-octane, cyclohexane, methylcyclohexane, petroleum naphthas, benzene, toluene and xylene.  The quiescent zone is preferably cylindrical and may be a length of pipe or a coil.  The mixture entering the quiescent zone may contain about 5 per cent unreacted butadiene.  The catalysts may subsequently be inactivated with a low molecular weight alcohol and the mixture then washed with an acid.  Alkylates may be separated from the liquid polymer by fractionation.  In a preferred process, feedstock and catalyst from zones 10, 11 are charged to the oxygen-free reaction vessel 14.  When the concentration of polybutadiene is 15-50 per cent, further catalyst and feedstock are continuously added and an equivalent quantity of reaction mixture withdrawn to a quiescent reaction zone 16.  The final effluent is admixed by pump 22 with methanol from zone 20 and then with acid from 25.  The mixture from 24 passes to separation zone 31 from which the organic phase is passed, via line 33, to fractionation zone 34.  The butenes are collected in storage zone 36, alkylated butadiene in zone 40 and the polymer is decolourized in 43 and collected in 44.
Patent GB-849107-A (GB)
Title: Improvements in and relating to the production of sulphuric acid
IPC: C01B17/86
Filed: 1956-09-11
Abstract: In the production of sulphuric acid by the chamber process, which comprises oxidising sulphur dioxide with nitrosyl-sulphuric acid, converting the resulting sulphur trioxide to sulphuric acid with steam, and reoxidising the liberated nitric oxide to nitrogen trioxide, which is re-dissolved in sulphuric acid to form nitrosyl-sulphuric acid, the sulphur dioxide gases employed consist substantially entirely of sulphur dioxide, and the necessary oxygen for the re-oxidation of the nitric oxide is added after the oxidation of the sulphur dioxide with nitrosyl sulphuric acid, for example in the form of air, air enriched with oxygen, or pure oxygen.  The process may be coupled with the production of nitric acid by employing ammonia combustion gases to provide the nitrogen oxides in the system.  Thus, nitric oxide may be withdrawn after the sulphur dioxide is fully oxidised, and may then be worked up into nitric acid, the amount withdrawn being replaced by ammonia combustion gases.
Patent GB-403497-A (GB)
Title: Apparatus for distant and near operation of railway switch points
IPC: B61L5/02
Filed: 1932-10-06
Abstract: 403,497. Operating railway switch points. VEREINIGTE EISENBAHNSIGNALWERKE-GES., Siemensstadt, Berlin. Oct. 6, 1932, No. 27815. Convention date, Oct. 30, 1931. [Classes 104 (i) and 105.] Apparatus for distant and near operation of switch points comprises a distant lever 1 which, when turned in the direction of the arrow in Fig. 1, rotates a pulley 2 connected by rope 3 to a pulley 4 carrying a crank pin 5 engaging a cam slide 7 connected to the points 9. The lever is connected to the pulley 2 by a catch 11 on a slidable rod 10a engaging a recess 12 in the pulley. When the lever and pulley 2 are turned to the position shown in Fig. 2, the points are moved from one extreme position to the other. When it is desired to leave the points free to be operated by a local lever 17, a stop pin 14 engaging a recess in the rod 10a is withdrawn to permit the catch 11 to be moved by the grip 10 clear of the pulley recess, the lever 1 is then swung from the position of Fig. 2 to that of Fig. 1 without moving the pulley 2, the grip is then released to allow the catch 11 to engage a recess 16 in the pulley, the lever 1 is again swung to the position of Fig. 3, carrying the pulley 2 with it and moving the pin 5 into such a position that the points may be moved by the lever 17. In another form, the closed cam 7 is replaced by an open cam slide.
Patent GB-140722-A (GB)
Title: Improvements in built-up cutters for use in milling machines or other machine tools
IPC: B23C5/24
Filed: 1919-11-11
Abstract: 140,722. Herbert, Sir A., and Lloyd, A. H. Nov. 11, 1919. Milling-cutters; boring-bars.-Cutters for use in milling, and for boring-bars, &c. have one face of each of the inserted' blades flat and serrated to engage a corresponding face on a locking wedge. As applied to a surfacing cutter, the inserted blades A, Figs. 1 and 2, are made from stock of the section shown in Fig. 3, and are secured in inclined holes in the body that is correspondingly coned at B<2>. The serrated flat face A<2> is engaged' by a corresponding face C<3> on a conical wedge secured by a screw D. In a modification, Fig. 4. flat blades are secured in transverse slots milled right across the body.
Patent GB-1214414-A (GB)
Title: Improvements in or relating to methods of manufacturing electric lamps and to end caps therefor
Inventor: BESACIER JEAN
IPC: H01J5/60
Filed: 1969-06-02
Abstract: 1,214,414. Lamps. J. BESACIER. 2 June, 1969 [17 June, 1968], No. 27915/69. Heading F4R. [Also in Divisions H1 and H2] A bulb 19 for use in a motor vehicle headlamp is provided with a cap formed, preferably by moulding plastics material, as a unitary member comprising two portions 6a, 7a the first of which has a pair of inwardly directed beads 3a adapted to engage with grooves 4a in the neck 1a of the bulb and the second of which carries a small parabolic reflector 17 or other accessory. The portions are initially connected by a thin connecting zone (8a) joining adjacent points 8b, 8c, so that after securing the portion 6a to the bulb the connecting zone can be torn by applying axial pressure to the portion 7a thereby leaving the reflector free to slide along the portion 6a until the required position of focus is reached. The portions are then secured together by ultrasonic or induction welding.
Patent GB-389758-A (GB)
Title: Manufacture of dyestuffs
IPC: C09B29/08
Filed: 1932-10-07
Abstract: Azo dyes; cellulose esters or ethers, dyeing.--Azo dyes suitable for dyeing cellulose ester or ether materials are produced in substance by coupling diazotized 4-nitro-2-chloraniline with an N-alkyl-o -sulphonic acid of a non-sulphonated mononuclear primary amine of the benzene series containing no substituent in m-position to the amino group and splitting off the alkyl-o -sulphonic group.  The products dye acetate silk pure orange to red orange shades fast to light and washing.  They are preferably used in finely subdivided form obtained by grinding to form a paste with water containing a dispersing agent such as a sulphonated residue from the manufacture of benzaldehyde or turpentine (cf. Specification 271,898, [Class 2 (iii), Dyes &c.]. Such pastes may be converted into dry preparations, which can be powdered, by cautious drying in vacuo in presence of a further quantity of the same dispersing agent or another such as sulphite cellulose lye.  In an example diazotized 4-nitro-2-chloraniline is coupled in the cold with the sodium salt of the o -methanesulphonic acid of aniline, o-toluidine or o-anisidine and the product is heated with caustic soda solution to split off the methyl-o -sulphonic group. Specifications 11343/99, [Class 2, Acids and salts, Organic &c.], and 200,873, [Class 2 (iii), Dyes &c.], also are referred to.
Patent GB-1205166-A (GB)
Title: Process and apparatus for the hydrodesulphurisation of heavy petroleum hydrocarbon oil
IPC: B01J8/38
Filed: 1968-06-12
Abstract: 1,205,166. Hydrodesulphurizing oils. NIPPON OIL CO. Ltd. 12 June, 1968 [12 June, 1967], No. 28004/68. Heading C5E. A process of hydrodesulphurizing heavy petroleum hydrocarbon oil comprises contacting said oil and a hydrogen-containing gas with a hydrodesulphurization catalyst in the fluidized state, in which process (a) said heavy oil and hydrogen-containing gas are introduced into a reactor containing said catalyst; (b) the reaction system consisting of said heavy oil, hydrogen-containing gas and said catalyst is introduced to a fluidization initiating zone located in the reactor at the bottom thereof to initiate the fluidization of the system; (c) the resulting fluidized system is caused to move from said fluidization initiating zone into an adjoining fluidized reaction zone disposed in said reactor above the former zone, and while it is moved upwardly through the fluidized reaction zone substantially all the hydrodesulphurization of the heavy oil is carried out; (d) the hydrodesulphurized product overflowing from said fluidized reaction zone and the catalyst are caused to dwell in a separating zone disposed inside said reactor immediately above the fluidized reaction zone, to separate the hydrodesulphurized product, the catalyst and the hydrogen-containing gas from each other; (e) the catalyst separated in said separating zone is caused to settle to a catalyst settling zone disposed inside said reactor externally of said fluidized reaction zone, the upper part of said catalyst settling zone communicating with said separating zone, the bottom part of said settling zone communicating with said fluidization initiating zone; and (f) the hydrodesulphurized product is withdrawn from the aforesaid separating zone. The catalyst may be any conventional catalyst such as alumina or silica - alumina - supported nickel - molybdenum catalyst, nickel - cobalt - molybdenum catalyst, cobalt-molybdenum catalyst or nickeltungsten catalyst. In a preferred form of apparatus the fluidization initiating zone is indicated by 14, the fluidized reaction zone by 8, and the separating zone by 10. The annular zone 9 functions as catalyst settling zone which is joined by a choked annular passage 11 to the initiating zone 14.
Patent GB-634648-A (GB)
Title: A device for suspending filing folders in filing cabinets or the like
IPC: B42F15/02
Filed: 1946-09-18
Abstract: 634,648. Filing paper ; tabs. ELLIS, L. G. Sept. 18, 1946, No. 28020. [Classes 16 and 146 (i)] A suspension filing device comprises a horizontal channelled retaining member b adapted to engage the upper edges of adjacent sides a of two adjacent folders, lateral movement of the folders being prevented by means of two removable sliding locking members c inserted in opposite ends of the retaining member b. The upper edges of the sides a have flanges a2 and a<SP>1</SP>, a<SP>3</SP> respectively and are engaged by a flange b<SP>2</SP> of the member b. The members c have inturned edges c<SP>1</SP> to prevent the lateral movement of the folders and are provided with notches d for suspension on rails. Tabs. A sliding transparent cover of channel section with inturned flanges engages over the member b, to protect a legend strip. According to the Provisional Specification, the member b may have two re-entrant flanges b<SP>2</SP>.
Patent GB-1277461-A (GB)
Title: Method and apparatus for joining ends of pipe sections by driven force fit and joints formed thereby
Inventor: MOUNT WADSWORTH WALTON
IPC: B21D39/04
Filed: 1969-06-03
Abstract: 1277461 Jointing; tube expanding; rolling tubes W W MOUNT 3 June 1969 [5 June 1968] 28057/69 Headings B3J B3M and B3U [Also in Division F2] The method of joining two metal pipe sections together as described in Specification 1,153,150 is further characterized in that the pipe sections are maintained in axial alignment during the joining operation by a mandrel (Fig. 4A, not shown) or by guides 26, Fig. 7. In an embodiment described, the end of the pipe section 1 is flared by moving a pipe gripper 45 by piston and cylinder units 38, 41, 40, 42 towards a flaring tool 53 positioned on the piston rods 41, 42. After removing the flaring tool 53, the pipe section 1 is forced over the other stationary pipe section which is gripped by a gripper 31 connected to the cylinders 38, 40. The internal restriction formed by the bent-in nose of the inner pipe section of the joint may be removed by a rotating grinding wheel (15) (Fig. 4, not shown) or a pair of rollers 18, Fig. 5, attached to a rotatable shaft 17 and movable into engagement with the pipe section by fluid operated cylinders 21.
Patent GB-1356628-A (GB)
Title: Method of manufacturing materials suitable for use in a magnetic  tape apparatus
IPC: C23C4/10
Filed: 1971-06-15
Abstract: 1356628 Flame spray coating FUJI PHOTO FILM CO Ltd 15 June 1971 [15 June 1970] 28067/71 Heading C7F [Also in Division B2] A tape guide means suitable for use in magnetic tape apparatus is coated by flame-spraying with a film comprising at least one of alumina, titania, or tungsten carbide, the resultant film having a Vickers hardness > 800, and the film is then finished to a surface roughness (as defined) of <6Á. Preferred coatings are (a) Al 2 O 3  40-60% plus TiO 2 , 60-40% (b) Al 2 O 3  30% plus TiO 2  70% and (c) WC, but there may be added to the coating composition up to 30% of chrome oxide, zinc oxide, or ZrO 2 ; the substrate may be a video tape guide means, e.g. a drum (of A1) a magnetic head or a guide pin. Surface finishing is by grinding, lapping, honing or brushing. The flame spray gun may be a chamber wherein fluidized coating material is detonated using an oxygen - acetylene mixture. Fig. 1, (not shown).
Patent GB-445107-A (GB)
Title: Improved steam control valve assembly for direct-acting pumps
IPC: F01L25/06
Filed: 1934-10-02
Abstract: 445,107. Engine and like valve-gear. WEIR, Ltd., G. & J., RUSSELL, A. C., and SIM, J., Holm Foundry, Cathcart, Glasgow. Oct. 2, 1934, No. 28143. [Class 122 (ii)] A direct-acting pump is provided with a main valve A with an auxiliaryvalve B arranged coaxially therein. The valve A controls the main admission and exhaust of the main cylinder, and the valve B a supplementary admission and exhaust. The valve B is moved mechanically from the pistonrod by gear which may include a lostmotion device, and the valve A is moved by the same gear initially, and finally by fluid-pressure. The supplementary supply ensures the piston-movement after cut-off and the completion of the powerstroke when the pump is moving slowly. Steam is supplied to the space H, and the exhaust is connected to the recesses L, M. The passages I, J communicate with the cylinder ends, and the main admission and exhaust cut-off are effected on the valve passing the edges O, O<1>. The opening of the ports T, W which supply steam to throw the valve A is accompanied by the closure of the respective exhaust ports V, b. The valve-chest ends exhaust through ports U, V, a, b to the recesses L, M. The supplementary steam supply controlled by a valve C passes through passages P, Q, R, X, S and P, Q, R, Xl, S<1> to the two main cylinder ends respectively, and the exhaust passes through passages S, f, g, Y, hand S<1>, f<1>, g<1>, Y<1>, h<1>. Expansive working is obtained by the closing valve C. Steam and exhaust laps may be provided. The ports V, a are placed to ensure main-valve cushioning. A modification is described for small pumps wherein the byepass passages are simplified, and no provision is made for the manual control of the cut-off.
Patent GB-876469-A (GB)
Title: Rigid polyurethane foam
IPC: C08G18/48
Filed: 1959-08-18
Abstract: A rigid polyurethane foam is produced by reacting an arylene di-isocyanate with a polyoxypropylene ether obtained by condensing 0,25-50 parts of propylene oxide with 1 part of a hexitol or a hexitol-water mixture containing up to 15% water. Specified hexitols are sorbitol, mannitol, dulcitol and iditol, and their mixtures may also be used.  A list of suitable isocyanates is given, and optional ingredients are catalysts, e.g. tertiary amines and organo-tin derivatives; surfactants, e.g. silicones; and flame retardants, e.g. halogeno-organic compounds, antimony trichloride or phosphoro-organic compounds such as an aryl alkyl phosphonate.ALSO:A rigid polyurethane foam is produced by reacting an arylene diisocyanate with a polyoxypropylene ether obtained by condensing 0,25 to 50 parts of propylene oxide with 1 part of a hexitol or a hexitol-water mixture containing up to 15% water.  Specified hexitols are sorbitol, mannitol, dulcitol and iditol, and their mixtures may also be used. A list of suitable isocyanates is given, and optional ingredients are catalysts e.g. tertiary amines and organo-tin derivatives; surfactants e.g. silicones; and flame retardants e.g. halogens-organic compounds, antimony trichloride or phosphors-organic compounds such as an aryl alkyl phosphonate.  Cellularity may derive from a thermally unstable or a low boiling point component, or by adding water where a molar excess of di-isocyanate is used.
Patent GB-719684-A (GB)
Title: Improvements in or relating to filters for fluids
IPC: B01D35/12
Filed: 1952-11-10
Abstract: 719,684. Filtering liquids. AIR-MAZE CORPORATION. Nov. 10, 1952 [Dec. 1, 1951], No. 28241/52. Class 46. [Also in Group XXIX] Fluid undergoing filtration is switched from one to the other of two filter chambers 59, 60 within a single housing having a pair of inlet ports 59a, 60a, and a pair of outlet ports 63, 64 by a valve 17 which in one position opens one or other of the ports of one pair, e.g. the outlet ports 63, 64, and in another position reverses the ports of the chosen pair; the valve 17 being displaced by a member, e.g., a rod 35 connecting pistons 33, 34 responsive to pressure drop across the filter in use occasioned by bui'dup of back pressure therein and transmitted to the high pressure face through the ports 59a, 60a, the filter 28 not in use, a chamber 62 and a duct 67. The valve is held in either of its extreme positions by engagement of a spring- biased detent 37 in one or other of recesses 38, 39 and the detent is withdrawn prior to snapover of the valve 17 by cam surfaces 35b, 35c which provide a lost motion connection between the rod 35 and valve 17. With port 64 now opened and filter chamber 60 in use back pressure when built up is transmitted through ports 60a, 59a, the chamber 59 not in use, a chamber 61 and a duct 65 to the piston 34; the piston 33 being connected by duct 67 to the outlet port 64 of the filter chamber 60 in use. In a modification wherein the two inlet ports are controlled by the valve 17 the outer faces of the piston are in constant communication with the corresponding filter chambers. The fi'ter elements 28 of each chamber comprise a plurality of spaced hollow leaves as described in Specification 591,468, and are mounted on a perforated tube 27 and retain ice crystals separated from petrol at low temperatures. The ice is melted by passing steam or exhaust gas through a surrounding jacket.
Patent GB-1026649-A (GB)
Title: Improvements relating to gas filters
Inventor: YATES ERNEST ALFRED
IPC: B01D46/52
Filed: 1963-07-17
Abstract: 1,026,649. Gas filters. COPPER & ASBESTOS WASHER CO. Ltd. July 17, 1963, No. 28253/63. Addition to 856,686. Heading B1T. In a gas filter, the filter element 16 is enclosed between the discs 10, 12 and side wall 14. The filter is supported by members 44, 48 and lies in the path of the gas flow from the inlets 26 through the web 46 and outlet 20. The side wall is closed by the fastener 32 which urges 10, 12 and 16 into engagement.
Patent GB-1361690-A (GB)
Title: Tobacco flavourants
IPC: A24B15/32
Filed: 1972-06-16
Abstract: 1361690 Methylhexanal and methylhexenal derivatives LIGGETT & MYERS Inc 16 June 1972 28262/72 Heading C2C [Also in Division A2] Compounds of Formula I where Y is H, OH, lower alkoxy or lower acyloxy; X is -CH 2 OH, lower alkoxymethyl, lower acyloxymethyl, 2-hydroxyethyl, formyl, acetyl, carboxyl or lower akoxycarbonyl; y is 0 or 1; and the dotted line indicates a #-bond that is present when y is 0 and absent when y is 1, with the proviso that X is acyloxymethyl or alkoxymethyl only when y is 1, are used to modify the organoleptic characteristics of tobacco, i.e. as tobacco flavourants. The com-. pounds may be prepared by known methods starting with isovaleraldehyde.