baber/WOPTO huggingface dataset:
Patent GB-1537798-A (GB)
Title: Air sifters
IPC: B07B4/04
Filed: 1977-09-13
Abstract: The air classifier (1) possesses a plurality of identical classifying elements (2) connected in series. Each classifying element (2) has a chamber (3) with a feed opening (4) for material to be classified and a discharge opening (5) for coarse material. Each chamber (3) has two plates (6, 7), the upper plate (6) being designed as a box (10) with a perforated working surface (11). Opposite the base (6) is a suction nozzle (16) for fine material. The suction nozzle (16) can be pivoted upwards and is provided with an adjustable and movable secondary air opening (18). The air classifier can thus be adapted to the properties of the feedstock. In particular, it has a minimum of classifying stages which permit a multiplicity of components of the material to be classified to be separated according to only slightly different sorting features. The air classifier is suitable in particular for use for municipal refuse. <IMAGE>
Patent GB-903943-A (GB)
Title: Method of vulcanization of polymers of vinyl alkyl ethers
IPC: C08K5/14
Filed: 1960-11-07
Abstract: Poly(vinyl alkyl ethers) are vulcanized with an organic peroxide having the formula: <FORM:0903943/IV(a)/1> where R1, R11, R2, R21 are alkyl groups having less than 10 carbon atoms and R3, R31 are aryl or haloaryl groups.  100 parts of the poly(vinyl alkyl ether) with 0,1 to 15 parts of the said peroxide and optionally 10 to 80 parts of reinforcing filler are used and then the compounded material is heat treated at 250 DEG  to 350 DEG F. for sufficient time to obtain a cure, the resulting vulcanizate having a tensile strength greater than 1,000 pounds per square inch.  Vinyl alkyl ethers specified are vinyl methyl ether, vinyl ethyl ether, vinyl isopropyl ether, vinyl n-butyl ether, vinyl isobutyl ether, vinyl n-hexyl ether, vinyl 2-ethyl hexyl ether, vinyl n-octyl ether and vinyl octadecyl ether. Organic peroxides employed are di(alpha, alpha-dioctylbenzyl) peroxide, di(alpha, alpha-diethylbenzyl) peroxide, dicumyl peroxide, di(alpha, alphadimethyl-p-chlorobenzyl) peroxide, di(alpha, alpha-dimethyl-2,4-dichlorobenzyl) peroxide, di(alpha, alpha-dihexylbenzyl) peroxide and di(alpha, alpha-dimethyl-naphthyl methyl) peroxide.  Reinforcing fillers specified are finelydivided silica fillers and carbon blacks. Sulphur bearing curing agents which may be employed are sulphur, thiuramdisulphides, the higher thiuramsulphides, the aminepolysulphides, the alkyl thiocarbamylpolysulphides and the N-substituted dithiothiazoles. Unsaturated carboxylic acids may be added to accelerate the curing and those specified are maleic acid or anhydride, fumaric, acrylic, methacrylic, ethacrylic, vinylacrylic, itaconic, methylitaconic, aconitic, methylaconitic, crotonic, alpha-methylcrotonic, cinnamic and 2,4-dihydroxy cinnamic acids, citraconic anhydride and sorbic acid. Reticulators which may be used include metal oxides.  A stabilizing agent such as parahydroxyphenyl morpholine may be employed.
Patent GB-900315-A (GB)
Title: Improvements in or relating to resilient couplings
IPC: F16D3/74
Filed: 1958-11-26
Abstract: 900,315. Non-metallic springs. LEMFORDER METALLWARENGESELLSCHAFT. Nov. 26, 1958 [Dec. 14, 1957], No. 38180/58. Class 108(3). In a resilient coupling device the resilient material comprises a polyurethane based plastic. The plastic comprises a cellular intermediate layer 3, Fig. 1, and outer layers 3<SP>1</SP> of a homogeneous plastic. End members 1<SP>1</SP> have holes 1<SP>11</SP> permitting the plastic to enter inside the members during moulding. A modification is described in which the whole of the resilient member comprises cellular plastic. In a further embodiment perforated discs 9, Fig. 3, supported by pins 4 are inserted into open-ended shells 8. Discs 9 may be replaced by unperforated discs. Fig. 4 shows an embodiment in which a cup is formed by connecting an attachment disc 9 to an annular member 10.
Patent GB-350918-A (GB)
Title: Improvements in or relating to wheels
IPC: B60B3/18
Filed: 1929-12-17
Abstract: 350,918. Detachable wheels. BAKER, F. W., The High House, Oldswinford, Stourbridge, Worcestershire. Dec. 17, 1929, Nos. 38691/29, 3891/30, 7633/30, 8099/30, 13260/30, and 26015/30. [Class 144 (i).] A detachable wire-spoked wheel comprises an inner set of spokes 2 carried by an inner hub-member 5 adapted for attachment adjacent the brake-drum 12, and an outer set of spokes 1 carried by a hubmember 4 which is secured over the end of the permanent hub 8 by a threaded collar 9. The hub-members 4, 5 are spaced by a sleeve 16, Fig. 1, through which the looped ends of the spokes are passed ; or, as shown in Fig. 5, by a sleeve 21 adapted to abut the outer hub-member 4. The parts 4, 5 may also be spaced by wood &c. members 6 fitted with rubber washers 7. In the form shown in Fig. 1, the hub-cap 19 is secured by bayonetfastenings 20. Fig. 5 shows a modification in which the cap 22 is secured by a central set-screw 23. In both these forms, the drive is transmitted through a plate 10 having alternating bosses 11, 15 engaging apertures in the hub-member 5, the bosses 11 being fitted with resilient cushions 14 surrounding the attachment-bolts 13. Fig. 7 shows a twin-wheel device in which the inner wheel 27 is clamped to the brake-drum by means of a ring 38 and bolts 37, the outer wheel being secured to the ring 38 by bolts 39 and further secured on the sleeve 25 by the threaded cap 40. Specification 311,876, [Class 144 (i), Wheels for vehicles], is referred to.
Patent GB-1457137-A (GB)
Title: Apparatus for handling coverslips
IPC: B65G61/00
Filed: 1973-08-16
Abstract: 1457137 Sheet separating/forwarding apparatus JOHN WYETH & BROS Ltd 31 July 1974 [16 Aug 1973] 38702/73 Heading B8R In an apparatus for applying coverslips 100 to microscope slides 146 the coverslips are separated from the bottom of a pile 89 by a reciprocating plate 87 having a recess proportioned to accommodate a single slip and are transferred from the recess to the slides (carried on conveyer 12) by a reciprocating suction cup 112. The slides are transferred from an input conveyer 11 to process conveyer 12 by a platform 44 which is moved between the chains of conveyer 11 to lift a slide from the conveyer and is then moved downwards between the chains of conveyer 12 to release the slide. The slide is aligned longitudinally by rising and falling fingers 51 and laterally by further fingers. The aligned slide is provided with mounting medium from a pipette 63. The assembled slides and cover slips are discharged on a conveyer 13.
Patent GB-345334-A (GB)
Title: Improvements in the manufacture and production of hydrocarbons of high boiling point, in particular viscous hydrocarbons from hydrocarbons of low boiling point
IPC: C07C2/00
Filed: 1929-12-18
Abstract: High-boiling hydrocarbons from which lubricants may be prepared are obtained by condensing lighter hydrocarbons by heat treatment in presence of previously prepared double compound of ethylene and aluminium chloride.  Gaseous olefines or gaseous mixtures containing olefines may be passed in during the treatment.  In examples, (1) During 8 hours 500 lb. of isobutylene are led with stirring at 100-120 DEG  C. into 400 lb. of paraffin oil containing double compound equivalent to 50 lb. of aluminium chloride, and the temperature is raised to 140 DEG  C. for about 1 hour; after cooling, water is added to decompose the double compound and remove the aluminium chloride, and the oil is separated and fractionally distilled under reduced pressure.  (2) 600 lb. of paraffin-free brown coal tar oil boiling at 50-150 DEG  C. at 1 mm. pressure is stirred and gently heated with double compound containing 100 lb. of aluminium chloride until the compound is dissolved; then during 12 hours the temperature is raised to 160-180 DEG  C. while a mixture of about 20 per cent of propylene, 55 per cent of isobutylene, 10 per cent of b -butylene, and 15 per cent of higher olefines is led in, 400 lb. of olefines being absorbed.  The double compound may be prepared by leading ethylene, with or without inert gases such as nitrogen or hydrogen, at 40-60 DEG  C. into a suspension of aluminium chloride in ligroin, paraffin oil, petroleum ether, or other solvent substantially free from unsaturated compounds.  The resulting solution or the compound separated by cooling may be used. Specifications 316,274, [Class 91, Oils &c.] and 326,500, [Class 2 (iii), Dyes &c.], are referred to.ALSO:A double compound of aluminium chloride and ethylene is obtained by leading ethylene, with or without inert gas such as nitrogen or hydrogen, at 40-60 DEG  C. into a suspension of aluminium chloride in ligroin, petroleum ether, paraffin oil, or other solvent substantially free from unsaturated compounds.  The resulting solution or the double compound separated by cooling is used for condensing hydrocarbons.
Patent GB-842135-A (GB)
Title: Improvements in or relating to liquid dispensing apparatus
Inventor: FRASER JOHN
IPC: G01P13/00
Filed: 1957-12-13
Abstract: 842,135. Liquid flow indicators. AVERYHARDOLL Ltd. Dec. 11, 1958 [Dec. 13, 1957], No. 38853/57. Class 69 (1). In a sight glass arrangement for liquid dispensing apparatus of the kind in which the liquid is measured by means of a meter and delivered in a continuous stream to a receptacle, the sight glass 25 being arranged in a loop of a small-bore piping 21, 22, the ends of which are connected to a main large-bore conduit leading directly from a meter to a delivery hose respectively upstream and downstream of a flowrestricting device which produces a pressure drop between the two ends of the loop, the flowrestricting device comprises a disc 17 resiliently urged in an upstream direction in the large-bore conduit and co-operating with a downstreamfacing step 14 in this conduit.
Patent GB-1530739-A (GB)
Title: Mineral fillers
IPC: D21H19/38
Filed: 1976-09-20
Abstract: 1530739 Mineral fillers LAFARGE 20 Sept 1976 [18 Sept 1975] 38883/76 Heading C1A Mineral fillers for use in paper or paints are prepared by crushing synthetic calcium aluminates or anhydrous calcium silicate to a fineness of 3000-4000 cm2/g Blaine Specific Surface, mixing with water to form a paste having a dry extract of at least 50 wt. per cent, which after hydration at 10-100 C. is converted to a suspension by addition of a surface active agent and, if necessary, water, to give a suspension whose viscosity is less than 5000 cps. and whose dry extract is 60-80 wt. per cent, the molar ratio of Al 2 O 3 , to CaO being 1:1  to 1:4.
Patent GB-882652-A (GB)
Title: Seed dressing machine
Inventor: BALLS IVAN JOHN
IPC: A01C1/06
Filed: 1957-12-14
Abstract: 882,652. Dressing seeds. PLANT PROTECTION Ltd. Aug. 20, 1958 [Dec. 14, 1957], No. 38958/57. Class 58. In dressing seeds, they are fed, by a paddle wheel 29 driven by an electric motor 25, Fig. 1, from a hopper 20 in to a distributer 30, wherein liquid dressing is distributed on to the seeds, as by trickling down a plurality of rods 39 mounted in a distribution head 38, Fig. 15. The mixture of seeds and liquid dressing then passes into an upwardly inclined mixing conveyer comprising a rotating worm 71 and a cylindrical casing 70, having a dust-extraction vent 77 and a discharge opening 76, leading to twin delivery spouts 75. The main bulk of the mixture is propelled upwardly, along the conveyer, by the rotating worm, but a portion returns to the lower part of the casing, through an annular space between it and the worm, to be repropelled along the conveyer. A powdered solid dressing may be fed in to the conveyer through an inlet 50 and blended with the mixture. The operation of the paddle wheel and the supply of liquid dressing to the distribution head, through a solenoid valve, are regulated by a plate switch 21 in the hopper, sensitive to the pressure exerted by the amount of seeds therein, and another switch associated with the paddle wheel drive, both switches being in the electric circuits of the motor 25 and the solenoid of the valve. According to the Provisional Specification, the paddle wheel may be rotated by pawl and ratchet mechanism. The hopper may be constructed to tip and control the rotation of the paddle wheel and the supply of liquid dressing. The seeds may fall in the form of a hollow cylinder, inside which liquid dressing, fed on to a rotating disc, is spun off, as a fine spray, on to the falling seeds.
Patent GB-1277107-A (GB)
Title: Improvements in and relating to electrical leads for cardiac pacemakers
Inventor: GOLDBERG EDWARD M
IPC: A61N1/05
Filed: 1969-08-04
Abstract: 1277107 Cardiac pacemaker electrodes E M GOLDBERG 4 Aug 1969 [5 Aug 1968] 38977/ 69 Heading A5R An electric lead 14 for attaching a cardiac pacemaker to a heart comprises an insulated electrical conducting section 22, and a lead-in securing member 26 including a helical portion which is screwed into the muscle 30 of the heart 12. A non-insulated electrically conducting section 24 is preferably included. The sections 22 and 24 may be spring wound in a helix and the helix may taper towards the free end or have a reduced diameter portion and may be rigid wire wound in a helix, the free end of which is preferably a sharp point 28 and which is electrically conductive. Alternatively the helical member may be a hollow portion (52), Fig. 5 not shown, and have a helical thread (54) terminating in a sharp point (56). In another embodiment, Fig. 6 not shown, a first lead (60), similar to lead 14, is intertwined with a second lead (64) the end of which is non-insulated and is adjacent to but spaced from the non insulated part (68) of the first lead. The two leads may be attached to a pacemaker by the same or separate plugs. The leads are screwed into the heart muscle 30 by means of an insertion tool (32), Figs. 3 and 4 not shown, which has a bevelled end to accommodate the reduced diameter end or portion of the helix of the lead. To prevent the second lead from unscrewing from the heart when the insertion tool is removed it is wound around the tool the same number of times as the number of turns required to place the lead in the heart.
Patent GB-1399662-A (GB)
Title: Derivarives of 5-cinnamoyl benzofuran and process for the preparation thereof
IPC: A61P9/08
Filed: 1972-08-22
Abstract: 1399662 5 - Cinnamoyl - benzofurans DELALANDE SA 22 Aug 1972 [25 Aug 1971 18 July 1972] 38983/72 Addition to 1209558 Heading C2C  Novel compounds I  in which NR 1 R 2  is dimethylamino, diethylamino, diisopropylamino, pyrrolidino, piperidino, morpholino or perhydroazepino, n is 2 or 3, and R 3 , R 4  and R 5  are selected from hydrogen, halogen, hydroxy or C 1-4  alkoxy or two of the groups may be ortho to each other and form a methylenedioxy bridge in which case the remaining group is hydrogen with the proviso that when n = 2 either R 3 , R 4  and R 5  are not hydrogen or only one or two may be hydrogen in which case at least one of the remaining Rs or the remaining R is hydroxyl, and acid addition salts thereof are prepared by reacting an ether amine of khellinone II with an aromatic aldehyde III in an alkaline medium. Compounds I possess vasodilatory, hypotensive, diuretic, spasmolytic, analgesic, antiinflammatory, anti - histaminic, anti - tussive, broncho-dilatory, respiratory, analeptic and anti-ulcerous properties and form with a carrier a pharmaceutical composition which may be administered orally, rectally or parenterally.
Patent GB-831511-A (GB)
Title: Regulated power supply system using transistors
IPC: G05F1/56
Filed: 1956-12-21
Abstract: 831,511. Automatic voltage-control systems. STANDARD TELEPHONES & CABLES Ltd. Dec. 21, 1956 [Dec. 29, 1955], No. 39001/56. Class 38 (4). A D.C. voltage regulator comprises a series transistor between input and output circuits which is controlled by the amplified, detected output of an H.F. oscillator, modulated in accordance with output voltage variations. A rectified A.C. supply 1, 2 feeds a load 3 through transistor T 1 . Across the load, resistor 7, reference tube 6 and potentiometer 8 form a bridge circuit, the output being applied to the baseemitter circuit of transistor T 2 , to control the conduction of the emitter-collector circuit. The latter circuit is in parallel with the output, across resistor 9, of transistor H.F. oscillator T 3  and, acting as a variable shunt, effectively modulates the signal fed to transistor amplifier T 4 , T 2 , T 3  and T 4  are N-P-N-type transistors and have a separate, isolated power supply from transistors T 1 , T 5  and T 6  which are of P-N-P type. These supplies are derived respectively from generator, transformer and bridge rectifier arrangements 31 &c. and 27, 28, &c. T 4  output is coupled to T 5  through isolating transformer 18; T 5  amplifies and detects the signal. T 5  output is D.C. modulated by the supply voltage ripple and output voltage variations and is applied to the base of D.C. amplifier T 5 . T 6  controls the conduction of T 1  and varies its impedance to compensate output voltage changes.
Patent GB-919059-A (GB)
Title: Improvements relating to processes for the treatment of water
Inventor: BLIGHT FRANK CHARLES
IPC: B01J47/04
Filed: 1960-11-16
Abstract: The process of Specification 906,243 is modified by using an acid regeneration for the trap anion exchanger.  Specification 860,695 also is referred to.
Patent GB-1235989-A (GB)
Title: Method of demolishing a concrete construction
IPC: F42D1/00
Filed: 1969-08-06
Abstract: 1,235,989. Splitting concrete. GIKEN KOGYO K.K. 6 Aug., 1969 [26 Sept., 1968], No. 39437/69. Heading B5E. A method of demolishing a concrete construction comprises pouring a mixture of water and a material which expands upon hydration with water into a hollow within the concrete construction, and allowing the material to expand by hydration and thereby destroy the concrete construction. The hollow may be formed by drilling a hole in the construction. The material may be quicklime or calcined dolomite and is mixed with water and poured under pressure into the hole. A hydration reaction delaying agent, such as a substance containing one or more hydroxyl groups, e.g. glycerol, an alcohol, sodium hydroxide, sodium silicate, gypsum or bentonite, may be added to the mixture, and the opening closed using a quick-hardening substance such as a mixture of sodium silicate and cement. Upon hydration, cracks are formed in the construction which may be a column, beam or wall.
Patent GB-343662-A (GB)
Title: Improvements in or relating to exhaust silencers for internal combustion engines
IPC: F01N13/20
Filed: 1929-12-24
Abstract: 343,662. Exhaust silencers. LAGABBE, E. DE, 51, Boulevard de Courcelles, and LAVAU, E. C., 50, Boulevard Emile Augier, both in Paris. Dec. 24, 1929, No. 39502. Convention date, Dec. 28, 1928. [Class 7 (ii).] Exhaust gases from moving vehicles and aircraft pass from a receiver of streamline form between close set parallel plates 3-4, 5-6, the surfaces of which, remote from the gases, are in contact with a stream of cooling air. The plates 3, 4 are constructed from a single plate bent along the edges 9, 10, the two parts 3, 4 being held parallel by spacing-members or bosses stamped on each plate and riveted and welded together. Plates 3, 15 are riveted to form a unit, and the units are superimposed and secured together by a curved plate 18. The top and bottom of the silencer are closed by flat plates. The plates may be connected by lapping or welding. In a modification, Fig. 6, the units are formed from a plate of sheet metal which is cut and stamped to form wings 25, 26, which are connected by a curved part 27. In another modification, Fig. 9, the exhaust gases arrive and escape through pipes 39, 40 and pass between closely-set parallel plates 41, 42, the outer surfaces of which are cooled by a current of air flowing in the direction 38. The Specification as open to inspection under Sect. 91 (3) (a) also describes a modification, Fig. 7 (Cancelled), in which pairs of parallel plates 36, 37 are mounted radially on a receiver the axis of which is parallel to the direction of travel.
Patent GB-1026638-A (GB)
Title: Nematocidal compositions
IPC: A01N51/00
Filed: 1964-09-29
Abstract: Compounds of the formula <FORM:1026638/C2/1> wherein R stands for a C1 to C6 alkyl radical, R1\t is a hydrogen atom or a C1 to C4 alkyl, C1 to C4 alkoxy, C1 to C4 alkylmercapto or a nitro radical, A is a halogen atom and/or a trihalomethyl radical and n is a whole number of from 1 to 4, the substituents R1 being the same or different when n is 1, 2 or 3, are nematocidal (see Division A5).  In examples N-nitroso-N-methyl-2-chloroaniline N-nitroso-N-methyl-4-fluoroaniline, N-nitroso-N-methyl-2-trifluoromethyl-4-chloroaniline and N-nitroso-N-n-butyl-2-chloroaniline are prepared by nitrosaling N-methyl-2-chloroaniline, N-methyl-4-fluoroaniline, N-methyl-2-trifluoromethyl-4-chloroaniline and N-n-butyl-2-chloroaniline, respectively.ALSO:Nematocidal compositions comprise a N-nitroso-N-alkylhaloaniline of the general formula <FORM:1026638/A5-A6/1> wherein R is a C1 - C6 alkyl radical, R1 is a hydrogen atom, a C1 - C4 alkyl, C1 - C4 alkoxy, C1 - C4 alkylmercapto or a nitro radical.  A is a halogen atom and/or a trihalomethyl radical and n is 1 to 4, the substituents R1 being the same or different when n is 1, 2 or 3, in admixture with a solid diluent or carrier or in admixture with an organic solvent and an emulsifying agent capable of producing a stable emulsion when diluted with water or in admixture with water containing an auxiliary solvent and/or an emulsifying agent.  The compositions may be in the form of emulsifiable concentrates, spray powders, pastes, soluble powders, dusts and granulates.  Non-ionic and anionic emulsifers are specified.
Patent GB-826690-A (GB)
Title: Pressure vessel for a filter leaf assembly
Inventor: WHITMORE HORACE BYRON
IPC: B01D29/00
Filed: 1956-12-31
Abstract: 826,690. Leaf filters. WHITCO EQUIPMENT Ltd. Dec. 31, 1956, No. 39706/56. Class 46. [Also in Groups XVIII and XXV] A leaf filter comprises filter elements 7 mounted on a perforated tube 4 which also supports a closure member 6 which is fixed by clamping screws 19 to rails 2. The filter casing 20, carrying rollers 27 mounted on the rails, is movable axially and has an open end 21 which is provided with a locking head 22. The locking head 22 forms a shoulder 23 and has a series of spaced lugs 24 formed with recesses 25. A capstan 31, slidably mounted on tube 4, had threaded thereon a plate 32 provided with lugs 33. To close the unit the casing 20 is moved so that the closure member 6, provided with a gasket 34, seats on the shoulder 23, the lugs 33 on plate 32 are brought into engagement with recesses 25 and the capstan 31 is turned and comes into contact with the closure member, further turning applies a force between the closure member 6 and plate 32 which moves the casing 20 relative to the closure member to form a positive seating between these parts. Liquid to be filtered enters the casing through conduit 35 and filtrate is discharged through the tube 4. The filter leaves may be formed of a coarse screen covered by a fine mesh screen or cloth.
Patent GB-1128119-A (GB)
Title: Photoresist compositions
IPC: G03F7/038
Filed: 1967-08-31
Abstract: 1,128,119. Cyclic ketone oligomers. INTERNATIONAL BUSINESS MACHINES CORP. 31 Aug., 1967 [19 Sept., 1966], No. 39802/67. Heading C2C. [Also in Divisions C3 and G2] Cyclic ketones are condensed to trimers and tetramers using CCl 4  as catalyst in the presence of light or HCl as catalyst in the dark. The products have carbonyl group(s) and also other centres of unsaturation. In Examples I, II and III, cyclohexanone, cyclopentanone, and cyclooctanone respectively are condensed in the presence of CCl 4  and ultra-violet light.