baber/WOPTO huggingface dataset:
Patent GB-613926-A (GB)
Title: Improvements in or relating to alkylation process and products thereof
IPC: C07C2/66
Filed: 1945-09-27
Abstract: Benzene compounds are alkylated with olefins of not more than 6 carbon atoms by reacting a mixture thereof with the benzene compound in molar excess, and free from other unsaturated hydrocarbons, in the presence of an absorbant gel comprising silica and not more than 10 per cent by weight of an oxide of a metal of Group 3B, including boron, or Group 4A.  Suitable silica-alumina catalysts may be prepared as disclosed in U.S.A. Specifications 2,142,324 and 2,147,985.  A hydrous silica gel is first made from alkali silicate and acid, washed, activated with a solution of a metal salt which is hydrolysable, and washed and dried to give hard granules. Alternatively, the metal salt may be added before gelation.  Instead of alumina, oxides of boron, indium, thallium, titanium, zirconium and thorium may similarly be incorporated.  The amount of metal oxide is preferably about 0.1-2 per cent by weight.  Catalytic activity is increased by dehydration at about 200-300 DEG  F. in a steam of inert gas prior to use.  A benzene to olefin molar ratio between 1 : 1 and 1 : 10 is suitable.  Multi-point injection of olefin and recirculation of the effluent may be used.  Temperatures are generally about 200-700 DEG  F.  With propylene 250-450 DEG  and with ethylene 450-550 DEG  F. are preferred.  Pressures to maintain a substantial amount of liquid phase, generally 50-2000 p.s.i., may be used.  Temperature may be increased gradually as activity decreases. Flow rates are normally 0.1-10 liquid vols. per vol. per hr.  Pure olefins or mixtures thereof or with paraffins may be treated.  In addition to benzene and its homologues such as toluene, xylene and ethylbenzene compounds such as phenols and halogen derivatives may be used.  In examples: (1) a silica-alumina gel containing 1.3 per cent alumina, made by adding sodium silicate to sulphuric acid, boiling the partially dried gel with aluminium sulphate solution, washing and drying is used to alkylate a 5 : 1 molar benzene-ethylene solution at 500 DEG  F., 400 p.s.i., and reaction time of 46 mins.; (2) using aluminium and zirconium chlorides, a catalyst containing silica, alumina and zirconia in a weight ratio of 95 : 4 : 1 is obtained and used to produce ethylbenzene; (3) isopropylbenzene is prepared from propylene and benzene using the catalyst of (1) at 350-400 DEG  F., reaction time 30 mins.; (4) the catalyst is first dehydrated in propane at 250 DEG  F.; (5) benzene and propylene in molar ratio 8 : 1 are reacted at 300-330 DEG  F. and 250 p.s.i.; (6) silica-zirconia made by mixed precipitation is used for a similar reaction; (7) a butane-butene fraction with benzene in 6 : 1 molar excess yields butyl benzenes; (8) a 3 : 1 benzene, ethylene mixture with the catalyst of (1) yields ethylbenzene; (9) a silica-zirconia catalyst is used for ethylating benzene.
Patent GB-302968-A (GB)
Title: A machine for removing the surface scale from metal plates
IPC: B24B7/12
Filed: 1927-09-23
Abstract: 302,968. Meacher, W. Sept. 23, 1927. Disc apparatus.-A machine for removing surface scale from the upper and lower faces of the edge of a metal plate, for example, prior to welding; consists of a work-supporting framework 1, upon which the plate 12 is held by clamping- bars 7, running on rails 2 to carry the edges of the plate between pairs of opposed grinding- wheels 21 each driven by an electric motor 29. The frame 1 is traversed or reciprocated by means of a rack 10 thereon, driven by a pinion carried on a pivoted arm, which may be raised and lowered by pedal mechanism, and the pinion is driven by variable speed belt gearing from an electric motor. The wheels 21 are carried by pivoted arms 22 and driven by belts or chains, and are balanced by springs 24, 25. the grinding pressure being applied by a spring 26; stops 27, 28 respectively locate the grinding-faces and prevent the wheels touching each other. In a modification, the pressure is applied by tension springs and stops. Rollers 9 may be provided for smoothing the edges of thin plates prior to their reaching the grinding-wheels.
Patent GB-1116873-A (GB)
Title: Mounting of multiple row roller bearings
IPC: F16C19/54
Filed: 1965-06-15
Abstract: 1,116,873. Bearings. TORRINGTON CO. 15 June, 1965 [22 June, 1964], No. 25156/65. Heading F2A. A multiple row taper roller bearing assembly on a tapered shaft embraced by a backing ring 16, comprises series of taper rollers in inner and outer races, locking means 45, 47 between the bearing and an inner stop ring 15 in a groove in the shaft, and a jack 51 actuable between the bearing and an outer stop ring 50 in a groove in the shaft. The ram of the jack is extended by oil or air pressure and acts through ring 46 on the inner races, forcing them up the shaft into engagement with ring 16. Nut 47 is then unscrewed to abut ring 15, and a stud (42, Fig. 3, not shown) inserted in groove 59 and a hole in ring 45, thus locking the bearing in position. Ring 50 and jack 51 are then removed.
Patent GB-388451-A (GB)
Title: Improvements in and relating to the manufacture of resinous condensation products
IPC: C08G12/08
Filed: 1931-09-08
Abstract: The softening points of aniline-formaldehyde condensation products, prepared by dissolving the aniline in alcohol in the presence of not more than 4/100th equivalent of phthalic acid relative to the amount of aniline, heating the solution and adding excess of formaldehyde, are raised by subjecting the shaped or unshaped resins to a subsequent heat treatment at temperatures above their softening points.  The heat resistance of the infusible resins may be carried still further by adding formaldehyde and gradually raising the temperature stepwise during the subsequent heat treatment.  In an example, a condensation product of aniline with more than one molecular proportion of formaldehyde, prepared in the presence of 4/100th equivalent of phthalic acid, is subjected to a 24-hour subsequent treatment at 150 DEG  C., whereby the softening point is raised by 40-50 DEG  C. Specification 388,030 is referred to.ALSO:Shaped or unshaped aniline-formaldehyde resins, prepared by dissolving the aniline in alcohol in the presence of not more than 4/100th equivalent, relative to the amount of aniline, of phthalic acid, heating the solution and adding excess of formaldehyde, are subjected to a subsequent heat treatment at temperatures above their softening points, whereby their softening points are raised.  The heat resistance of the infusible resins may be carried still further by adding formaldehyde and gradually raising the temperature stepwise during the subsequent heat treatment.  In an example, a condensation product of aniline and more than one molecular proportion of formaldehyde, prepared in the presence of 4/100th equivalents of phthalic acid, is subjected to a 24 hour subsequent treatment at 150 DEG  C., whereby the softening point is raised by 40-50 DEG  C. Specification 388,030 is referred to.
Patent GB-953151-A (GB)
Title: Drip type coffee maker
Inventor: MERSON HAROLD
IPC: A47J31/02
Filed: 1962-07-02
Abstract: 953,151. Coffee making devices. R.M.S. ELECTRONICS Inc. July 2, 1962, No. 25298/62. Heading A4D. A coffee-making device comprises integrally moulded e.g. plastics, concentric cylindrical shells 10, 14 interconnected by radial ribs 18, which support the device on the rim of a cup, and by a sloping wall 22 which forms a receiving basket 23 for hot water which gravitates through perforations in a resilient snap-fitted removable cover plate 25 on to coffee supported on a mesh filter 44 snap-fitted into a groove in the shell 14, brewed coffee dripping through into the cup C. The cover plate 25 may have either a flexible strap 40 connected to the outer shell 10, or a simple handle, to facilitate its removal, e.g. for washing out and re-charging the device.
Patent GB-1315752-A (GB)
Title: Brushless dc motors and commutating circuits therefor
IPC: H02P6/18
Filed: 1971-04-19
Abstract: 1315752 Brushless DC motors SPERRY RAND CORP 19 April 1971 [6 April 1970] 25352/71 Heading H2A [Also in Division H3]  A commutating circuit for a brushless D.C. motor comprises a pulse source 11 for producing pulses at a given repetition rate, a switching arrangement 9 responsive to the pulses for sequentially energizing the motor stator windings, a gate 15 responsive to the counter e.m.f.'s in the stator windings for producing an output when the counter e.m.f. of a winding exceeds a predetermined value, and a synchronizing unit 17 responsive to the gate output for accelerating the pulse repetition rate of the pulse source 11. In the permanent magnet rotor motor shown, the three stator windings are commutated by thyristors 19, 21 and 23 which are triggered through diodes 45, 35 and 41 by pulses from the pulse source. The source includes a capacitor 61 normally charged through resistors 63 and 65 and discharged through a programmable unijunction transistor 53. When the winding counter e.m.f.'s exceed the supply voltage the diodes 73, 75 and 77 of OR gate 15 are individually forward biased to render conductive a transistor 67 which by-passes high value resistance 65 and so reduces the charging time of the capacitor 61. Under normal running conditions transistor 67 is periodically turned on by the counter e.m.f.'s and pulse source 11 feeds pulses to the thyristors 19, 21 and 23 so that the latter are sequentially fired in accordance with rotor position. At start up, diodes 81, 83 and 85 of AND gate 13 are reverse biased by the voltages on the stator windings and normally forward biased diode 87 is reverse biased by a pulse from source 11 so that a pulse is produced on tine 97 to trigger thyristor 19.
Patent GB-832408-A (GB)
Title: Charging-system for electric storage batteries
Inventor: OHRENSTEIN CHARLES
IPC: B63G8/41
Filed: 1957-08-13
Abstract: 832,408. Changing batteries. C.A.V. Ltd. Aug. 8, 1958 [Aug. 13, 1957], No. 25505/57. Class 38 (4). In a system for charging two batteries b, c in parallel, rectifiers d, e are respectively placed in series with each so that reverse current flow is prevented. The batteries may be charged by a D.C. generator or an A.C. generatorrectifier combination. A three-phase system is also disclosed.
Patent GB-1168918-A (GB)
Title: Sofa Bed
Inventor: MIKOS ALOYSIUS JOSEPH
IPC: A47C17/23
Filed: 1967-06-02
Abstract: 1,168,918. Bed-settees. SENG CO. 2 June, 1967 [6 June, 1966], No. 25617/67. Heading A4J. In the bed-settee of the type in which a folded, multi-section mattress frame is lowered into a compartment to form the settee seat, rear mattress section 32 is controlled, during conversion, by stay links 65, 70 and not by any direct pivotal connection with the framework 24 of the settee. The mattress frame, supported at pivots 36 and 58 is tilted and swung on arms 46 and 50 by co-ordinating linkages of which link 54 contains links 49 and 57 to move nearly equiangularly about their pivots 36 and 58, respectively. Link 67 and arm 50 are pivoted to stay link 70, to control the movement of section 32 so that the mattress thereon clears frame part 22c. Lost motion connection 71 allows the section 32 to be upwardly inclined in the bed position (Figs. 11 and 12, not shown). A slight upward inclination of section 32 may be obtained by inverting connecting link 62 (Fig. 13, not shown).
Patent GB-1411306-A (GB)
Title: Reactively dyed substrate
IPC: D06P3/60
Filed: 1973-05-30
Abstract: 1411306 Dyestuffs BURLINGTON INDUSTRIES Inc 30 May 1973 [7 June 1972] 25664/73 Heading C4P [Also in Division D1] In Examples 1 and 2 the dyes of formulµ are made by conventional processes. In Example 16 a copper phthalocyanine dye is prepared by heating a mixture of triammonium- 4-sulphophthalic acid, monopotassium-4-phosphonophthalate, urea, cupric chloride dihydrate and ammonium molybdate at 250‹ C., the product was washed in hydrochloric acid and dried.
Patent GB-896716-A (GB)
Title: Cartons
IPC: B65D5/49
Filed: 1960-07-22
Abstract: 896,716. Boxes &c. UNIPAK CARTONS Ltd. July 22, 1960 [Sept. 16, 1959], No. 25699/60. Class 18. A carton comprises a box having side walls 31, 32, Fig. 10, end walls 33, 34, bottom panels 37, 38 and top panels 35, 36 and an interior assembly A fixed to the end walls 33, 34 which divides the box into two longitudinal compartments. The interior assembly, shown as a single blank at Fig. 1, comprises primary panels 1, 2 anxiliary panel 4 having end tabs 6 and ancillary panels 11, 12. The blank is coated with pressure sensitive adhesive over the areas shaded in Fig. 1 and also on the obverse sides of tabs 3, 16 and 23. The interior assembly is erected by folding the tabs 6 into contact with the panels 4 and then by bringing the primary panels 1, 2 into contact by folding about score line 5, the folding being done in such a manner as to include the tabs 6 within the panels 4 and to bring the adhesively coated portions of the primary panels together. The ancillary panels 11, 12 separated from the primary panels by cuts 9 and score lines 10 and from one another by score lines 13 allow the panels 4 with hand apertures 8 cut therein to act as an extensible handle. At Fig. 10, the handle is shown at its lowermost position, flaps 11 having been bent from their initial vertical position to the position shown. According to the invention the flaps 11, 12 assist the movement of the handle from the lowermost position to the extended position or vice versa after a predetermined amount of movement has been imposed on the handle. The top panel 35, 36 are provided with cut-away portions 39 to form a slot through which the handle may pass. The two longitudinal compartments may be further subdivided by transverse partitions 22 bent out of the primary panels 1, 2 and attached to the side walls 31, 32. To strengthen the interior assembly A and prevent communication between the longitudinal compartments after flaps 22 have been bent into position, a further panel may be placed between the primary panels 1, 2 during erection of the interior assembly.
Patent GB-1091056-A (GB)
Title: A plastics drain pipe
IPC: E02B11/00
Filed: 1966-06-08
Abstract: 1,091,056. Plastic drain pipes. W. HEGLER. June 8, 1966 [June 23, 1965], No. 25584/66. Heading F2P. A plastics drain pipe as in Fig. 1 is smooth on its inside in the longitudinal direction, has annular or helical ribs 1 outside as reinforcement and is provided with entry openings 4 located at points of minimum wall thickness. The pipe is provided internally with longitudinal grooves 2 of sufficient depth to cut into the valleys between the transverse ribs 1 at the cross-over points to form the openings 4. A filter cord 5 is wound around the valleys between the ribs 1. Alternative forms and spacing of the ribs are described in the Specification.
Patent GB-420192-A (GB)
Title: Process of and apparatus for the electrical separation of suspended particles from gaseous fluids
IPC: B03C3/68
Filed: 1933-09-19
Abstract: In a process for the electrical separation of suspended particles from gases, the corona current is regulated in accordance with fluctuations in operating conditions, e.g., varying conductivity in the gases, while maintaining a <PICT:0420192/III/1> <PICT:0420192/III/2> constant potential between the electrodes by providing a regulating electrode situated outside the electrical field existing between the discharge and collecting electrodes, the potential of which is regulatable after the manner of a grid in an electron tube independently of the potential of the discharge electrodes.  Fig. 1 shows the application to a tubular precipitator in which the regulating electrode 2 is placed inside a ring of wire discharge electrodes 3 and outside the field between the discharge electrodes and the collecting electrode 1. In the arrangement shown in Fig. 2, the potential for the regulating electrode 7 is derived from a tapping 12 on a potentiometer 11 bridged between the discharge electrodes 8 and the collecting electrode 6.  If desired, the regulation may be effected automatically by passing the corona current through a solenoid having a spring-constrained cone operatively connected to the tapping member 12.
Patent GB-151924-A (GB)
Title: Improvements in or relating to motor wheels for vehicles
IPC: F16D3/04
Filed: 1920-09-08
Abstract: 151,924. Federated Exporters, Ltd., (Assignees of Motte, C. M.). Sept. 30, 1919, [Convention date]. Addition to 118,847, [Class 79 (ii), Motor vehicles, Driving &c.]. Void [Published under Sect. 91 of the Act]. Springs, arrangement of; guiding vertical play.-A driving and steering wheel of the kind described in the parent Specification is provided with a spring suspension mounted inside the wheel. The wheel hub a rotates on a sleeve b having arms p which engage the ends of a leafspring m secured at its centre to a trunnion i on the axle casing f, an upper trunnion h being slidably mounted in an extension of the sleeve b. A second spring may be fitted above the axle and vibration damping springs may be provided.
Patent GB-1478291-A (GB)
Title: Head-up display unit
IPC: G02B27/00
Filed: 1973-05-31
Abstract: 1478291 Head-up displays S.M ELLIS 31 May 1974 [31 May 1973 7 July 1973 3 Nov 1973 28 Nov 1973] 25902/73 32478/73 51134/73 and 55163/73 Heading G2J In a head-up display, an optical system, or part thereof, for producing illuminated data in a pilot's field of view is positioned in the path of light from the scene ahead of the aircraft, between the windscreen 12 and a beam combiner 21. As shown in Fig. 8, data is presented on a cathode ray tube 17 within a housing 16. An optical system 19 collimates light from the C.R.T. 17, directing it towards the combiner 21 which is positioned over a port hole 20 in the housing. The beam combiner 21 in Fig. 7 consists of a central triangular prism 26 flanked by two similar prisms 33, 34. The interfaces between these prisms are semi-reflecting. The prisms 33, 34 extend laterally beyond the housing 16 and so receive light from the scene to be viewed. This light is reflected within the beam combiner 21 and then directed towards the pilot. The prisms 26, 33, 34 are shaped so that the pilot cannot see the outside of the housing 16. Modifications of the beam combiner 21 are described. For example, the prisms may be replaced by mirrors. The C.R.T. 17 may be supplemented or replaced by a second C.R.T. 62, light therefrom being reflected towards the beam combiner 21 at an interface 65 between two prisms 63, 64. A camera 66 may be provided to record the image seen by the pilot. The beam combiner 21 is claimed and described in copending Specification 1478292.
Patent GB-831352-A (GB)
Title: Apparatus adapted for use as a vacuum cleaner or as a drier
IPC: A47L5/24
Filed: 1957-08-16
Abstract: 831,352. Electric driers. C. A. E. M. CONSTRUCTIONS ET APPLICATIONS ELECTRO-MECANIQUES. Aug. 16, 1957 [Oct. 30, 1956], No. 25926/57. Class 39(3). [Also in Group XXVIII] An electric drier of the hot air type comprises the motor-fan casing 1 of a vacuum cleaner of the hand type from the air inlet end of which has been detached the filter bag housing 13 and suction inlet duct 14 and to the opposite air exhaust end 22 is attached a housing 23 containing the main air heating resistance 26 and a second resistance 28 which becomes automatically included in series with the motor circuit thereby reducing the motor speed. The suction cleaner assembly is controlled by a switch 18 within the handle 2 and power is supplied to pins 20 which when the apparatus is used as a drier are engaged by sockets 29 of the heater device which is controlled by a switch 30; power then being supplied to pins 27.
Patent GB-691395-A (GB)
Title: Improvements in or relating to resinous siloxanes
IPC: C08G77/60
Filed: 1950-10-25
Abstract: A resinous siloxane is made by reacting, with elimination of zinc halide, one or more compounds of the formula RSi(OR1)2X, wherein R is a mono-nuclear aryl, alkaryl, aralkyl or lower aliphatic hydrocarbon radical, R1 is a lower aliphatic hydrocarbon radical and X is chlorine or bromine, with a compound of the formula XCH2.CHX.CH2X, wherein X is chlorine or bromine, and metallic zinc, hydrolysing the reaction product and, if desired, heating to condense the hydrolyzate.  The zinc may be used in the form of zinc dust with or without copper powder or as a zinc-copper alloy.  The reaction, which may be initiated at 40 DEG  to 120 DEG  C., is preferably effected in a liquid reaction medium, e.g. in a body of the dialkoxy silane itself or in a solution of the silane in an inert liquid such as a C6 to C13 saturated aliphatic hydrocarbon, benzene, toluene, xylene or diethyl- or di-isopropyl ether.  The molar ratios of the silane, trihalopropane and zinc are preferably within the proportions of 2-3 : 1 : 1-2.  The hydrolysate, after separation from the aqueous layer, may be dried and comminuted prior to the preparation of moulding compositions, which are made by mixing, mechanically or with the aid of the above solvents, the hydrolyzates with elastomers, such as butadiene acrylonitrile copolymer, or fillers such as glass or asbestos in the form of fibres or webs, finely divided lead oxide and/or lead sulphate, basic lead sulphate, magnesium oxide, carbon black, silica, clay, calcium carbonate, calcium silicate or magnesium silicate.  The products may be used as coating and impregnating agents and binders for laminates in shaped articles.  In examples, ethyl dimethoxychlorisilane (5), mixtures of phenyl dimethoxychlorosilane with (2, 4) ethyl dimethoxychlorosilane, and (3) methyl-dimethoxychlorosilane, and (6, 7) mixtures of dialkoxychlorosilanes resulting from the action of methanol on mixtures of phenyl- and ethyl-trichlorosilanes, are reacted with 1 : 2 : 3-trichloropropane and zinc with or without copper.  The products are hydrolysed and the hydrolysates condensed to resins.
Patent GB-938026-A (GB)
Title: Hydrophobic pigment pastes
IPC: C08G18/36
Filed: 1961-07-19
Abstract: A modified oil is produced in Example 1 by reacting 787 parts lacquer linseed oil and 100 parts linseed stand oil with 68 parts pentaerythritol in the presence of 2 parts lithium naphthenate and reacting the product with 90 parts toluylene diisocyanate. The product has an OH number of 69 and acid and NCO numbers of 0. In Example 2, 58 parts glycerol are used in place of the pentaerythritol and 120 parts of the diisocyanate are used.  The OH number of the product is then 52.  In Example 3, 687 parts lacquer linseed oil and 200 parts linseed stand oil are reacted as in Examples 1 and 2 with 58 parts glycerol and then treated with 140 parts toluylene diisocyanate.  This product has an OH number of 38.  Specifications 840,830 and 867,772 are referred to.ALSO:In a pigment paste, a hydrophobic pigment is bound with the reaction product of a polyisocyanate and a transesterification product of fatty acid glycerides and polyhydric alcohols. Suitable pigments are carbon black and phthalocyanine blue.  In the examples, the preparation of binders from mixtures of lacquer linseed oil with linseed stand oil by transesterification with pentaerythritol or glycerol and reaction with toluylene diisocyanate is described.  Trimethylol propane is mentioned as an alternative alcohol.  Driers, e.g. naphthenates and linoleates, may be added.  In Examples 2 and 3 comparison is made with compositions of alkyd resin, linseed oil varnish and carbon black and phthalocyanine blue respectively.  Specifications 840,830 and 867,772 are referred to.
Patent GB-1384015-A (GB)
Title: Demountable assembly for filtering molten aluminium
IPC: B01D29/11
Filed: 1972-06-05
Abstract: 1384015 Filtering molten metal KAISER ALUMINUM & CHEMICAL CORP 5 June 1972 [9 June 1971] 26220/72 Heading B1D A tube used to filter molten aluminium consists of a shaped fired mixture of refractory particles with a uniformly disposed vitreous bonding material containing not more than 10% silica. The particles have an average maximum diameter of from 0.165 to 2.8 mms.