baber/WOPTO huggingface dataset:
Patent GB-1253272-A (GB)
Title: Polyolefin films and aeronautical balloons produced therefrom
Inventor: UNDERWOOD WILLIAM FREDERICK
IPC: B64B1/40
Filed: 1969-01-17
Abstract: 1,253,272. Polyolefin films for aeronautical balloons. UNION CARBIDE CORP. 17 Jan., 1969 [18 Jan., 1968], No. 2974/69. Heading B5B. [Also in Division B7] Polyolefin films suitable for forming aeronautical balloons have been biaxially oriented in the machine direction and in the transverse direction in each case by stretching them at a stretch ratio of at least 3 : 1 and have been obtained from a polyolefin having an intrinsic viscosity in decalin at 130‹ C. of at least 1À2, the polyolefin being either a homopolymer of ethylene or a copolymer of at least 50% by weight of ethylene with another monomer (such as vinyl acetate, methyl acrylate, acrylic acid, ethyl acrylate, neohexene, methacrylic acid or propylene), the films having a "cold brittleness temperature" of -99‹ C. or lower, as determined in accordance with the method designated M11-P-4640A (U.S.A.F.). The film may be formed from an ethylene homopolymer having a density of up to 0À925. The intrinsic viscosity of the polymer is measured according to A.S.T.M. procedure D-1601-58T. The polyolefins may be formed into tubular films and may be biaxially oriented by inflation while in this form, or the films may be in sheet form and biaxially oriented by known tentering techniques. Preferably the biaxially oriented films are produced by the known "doublebubble" process. In this process a primary tube is first formed by melt extrusion from a die, inflated by admission of air, stretched at a temperature above its melting point and collapsed. The "blown tube" thus formed is then reinflated to form an isolated bubble therein and advanced through a heating zone to raise the film to its draw temperature. In the draw zone the film is radially expanded in both the transverse and machine directions at a temperature below the melting point of the film such that orientation occurs in both directions. The preferred draw temperature is 15‹ to 50‹ F. below the crystalline melting point of the film polymer. The biaxially oriented film is preferably annealed to eliminate the tendency of the film to pucker when being heat-sealed. In an example, a film 1À0 mil. thick formed from a polyethylene having a density of 0À9175 and an intrinsic viscosity (in decalin at 130‹ C.) of 1À3 is biaxially oriented at a stretch ratio of 3À4 : 1. When tested it is found to have a cold brittleness temperature below - 150‹ C. Aeronautical balloons are made from films produced according to the invention by cutting the films into a number of pieces or gores of predetermined shape and sealing the pieces to each other, usually by heat-sealing, along their edges.
Patent GB-1254994-A (GB)
Title: A method of hot-pressing rigid products
Inventor: CARLSSON BENGT
IPC: B29C43/52
Filed: 1970-01-21
Abstract: 1,254,994. Making hot pressed particle slabs. MOTALA VERKSTAD A.B. 21 Jan., 1970 [22 Jan., 1969], No. 2978/70. Heading B5A. A method of shaping slabs etc. by hot pressing particles, in which prior to shaping, some of the particles are heated and these particles are spread in a layer between two layers consisting of non-heated particles. The apparatus includes a particle producer 1, drier 2, screening station 3 which sends larger particles to bin 6 and finer particles to bin 7 to form the centre and outer layers of the slabs respectively. Particles from bin 6 pass through a glue mixer 8 into a heater 32 then into a shaping station 10 to form the central layer. Particles from bin 7 pass into a glue mixer 11 and hence into shaping station 10 to form the outer layers. Finally the layers are hot pressed in press 19. The particles may be of vegetable material or wood chips and the glue may be urea-formaldehyde resin. The particles for the centre layer are heated to about 70‹ C.
Patent GB-677096-A (GB)
Title: Improvements in and relating to moulding machines
Inventor: HUGHES WILLIAM
IPC: B22C11/00
Filed: 1950-02-06
Abstract: 677,096. Moulding-machines. BRITISH MOULDING MACHINE CO., Ltd. Feb. 6, 1951 [Feb. 6, 1950], No. 3007/50. Class 83 (i). [Also in Group XXXIV] Lubricating machines.-In a pneumaticallyoperated moulding-machine having lubricant supplied to the moving parts by the operating air, the oil is supplied by means actuated by the machine when in operation. The air may be supplied at 34 to a box 14 containing some oil 16 into which one or other of two arms 28 dip alternately, the arms being carried by a tube 22 on a hollow shaft 10 by which the moulding- machine table is reversed. At each such reversal the oil, on the arm 28 just raised, runs into a cup 24 in the tube 22 and through one of the holes 32 by which the air passes into the shaft 10. The arms may have cups 30 &c. fitted to increase their oil-carrying capacity.
Patent GB-536966-A (GB)
Title: Improvements in or relating to bogies for railway vehicles
IPC: B61F5/16
Filed: 1940-02-19
Abstract: 536,966. Rail vehicle undercarriages ; couplings. METROPOLITAN-CAMMELL CARRIAGE & WAGON CO., Ltd. (Ganz & Co., Ltd.). Feb. 19, 1940, No. 3090. [Classes 103 (v) and 103 (vi)] Bodies of railway vehicles are connected to bogies solely by means of relatively slidable members mounted on the bogies and on the underframes respectively and which transmit the tractive effort and are arranged to obtain a vertical geometrical axis of rotation whose position may lie at any desired point within limits. Arcuate guides 14, 15 mounted on longitudinal members 11 of a power-driven railcar bogie and lying on a circle having a centre 0 are engaged by correspondingly shaped shoes on the car body 10. The centre 0 is shown as situated forward of the rear end of the engine 13. Straightline guides engaged by pins may be employed, the guides in one form being pivotally mounted. Articulated coaches may be connected to a common bogie by a set of guides and shoes for each coach and having a common axis of rotation midway of the adjoining ends of the coaches.
Patent GB-561798-A (GB)
Title: Rocker arm snap contact electric switch
IPC: H01H13/28
Filed: 1943-02-26
Abstract: 561,798. Retractive switches. GIDLEY, R. Feb. 26, 1943, No. 3177. [Class 38 (v)] The lid 20 of a switch box is pivoted at 19 and bears on the underside, at one end, the male part 34 of a snap-fastener. This end is pressed upward by a spring 25 in the box, which also contains, mounted on a terminal block 35 so as to register with the part 34, the counterpart 33 of the fastener. The other terminal block 28 connects with part 34 through the spring 25 and strip 24. A partition 26 enables the contacts to be separated under oil, if desired.
Patent GB-1206382-A (GB)
Title: A method of reducing the noise which occurs in an aerodynamic pressure-wave machine
Inventor: LEUTWYLER PAUL
IPC: F04F13/00
Filed: 1969-01-20
Abstract: 1,206,382. Pressure exchangers. BROWN, BOVERI & CO. Ltd. Jan.20, 1969 [Jan. 22, 1968], No. 3220/69. Heading F1N. The noise occurring in a pressure exchanger due to the periodic impingement of flow on to the cell walls and to the periodic outflow from the cells is reduced by resolving the individual frequencies of the noise into ranges of frequencies of differing amplitudes. This is achieved by arranging the cells in groups aaa, bbb, ccc &c. the cells of each group being of equal circumferential width. A number of groups may be combined to form a main group, the width of the cells in a main group decreasing aaa, bbb, ccc and the widths of the cells in the next adjacent main group increasing ccc, bbb, aaa. A number of other possible ways of arranging the cells is disclosed.
Patent GB-885487-A (GB)
Title: Improvements in or relating to magnetic sound recording and playback apparatus
IPC: G11B15/34
Filed: 1959-01-29
Abstract: 885,487. Magnetic recorders; long-playing attachments. TOKYO DENKI KAGAKU KOGYO KABUSHIKI KAISHA, and HOSHINO, Y. Jan. 29, 1959 [Feb. 1, 1958], No. 3223/59. Class 40 (2). An attachment for the machine described in Specification 850,291 enables it to play long, perforated records as an alternative to the standard type. In the standard arrangement of Fig. 4, the turntable 14 carrying heads a, b and c is traversed by the leadscrew 27 so that the heads scan a stationary sheet record in arcuate tracks. As modified, an alternative plate 8<SP>1</SP>, carrying record feeding apparatus 31, 32, 35<SP>1</SP> and an additional motor M 3  replaces the original plate (8, Fig. 3, not shown). The motor M 3  or alternatively a drive derived from either of the motors supplied with the standard machine, drives the sprocket 35<SP>1</SP> directly and the take-up roller 32 by means of a slipping friction drive arrangement. In this simple embodiment, the drive to the sprocket 35<SP>1</SP> can be disengaged by the means 40 for fast forward wind and a handle is provided for rewind. The turntable 14 is not traversed using this arrangement, the sprocket holes being relied upon for registration. In further embodiments: (a) The attachment is hinged to the parent machine for quick change-over of function; (b) Interlinked drives and brakes are provided for 31, 32 and 351; (c) A guide for a knife is provided for cutting the record; (d) Windows are provided in the pressure plate 52 for the observation of editing marks and other visual features on the upper face of the record.
Patent GB-974651-A (GB)
Title: Improvements in or relating to glass cathode-ray tubes
IPC: H01J29/87
Filed: 1963-01-25
Abstract: 974,651. Cathode-ray tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 25, 1963 [Jan. 29, 1962], No. 3235/63. Heading H1D. A glass cathode-ray tube, e.g. a television tube is protected against implosion by two annular members 3 and 4, at least one of which, 4, is made from a hard insulating material and serves as a surrounding mask for the display area of the tube, the space between the annular members 3 and 4 and the wall of the tube being filled by a material 8 introduced in a castable or mouldable state, and which sets to form a hard non-elastic coherent mass. This arrangement prevents a crack in the display area of the tube spreading to the side of the tube, giving an implosion, but instead the crack terminates at the start of the material 8, allowing a slow ingress of air. A metallic band (not shown) may be embedded in the insulating material, e.g. under the member 4, and may be earthed through lug 7. The material 8 may be, e.g., a horn material from cows' or horses' hoofs, or asphalt, or gypsum or cement.
Patent GB-607392-A (GB)
Title: Concrete aerating machine
IPC: B28C5/38
Filed: 1946-02-01
Abstract: 607,392. Mixing-machines. NEAL, N. R.. and CHEECOL (HOLDINGS), Ltd. Feb. 1, 1946, No. 3263. Addition to 574,344. [Class 86] The whisk for a concrete aerating machine of the parent Specification is modified by the provision of an inverted conical or frusto-conical bottom formation produced by upwardly inclining the main bottom blades from their inner ends towards their outer ends, and/or by the provision of main bottom blades and/or top radial blades of helical form twisted so that the transverse angle increases from the outer to the inner end of the blade. The whisk shown in Fig. 2 has a conical bottom formation of inclined main blades 12, outer blades 13, and an outwardly flared ring 10. The top radial blades 11 and the bottom blades 12 may be twisted in the manner described above. The container 19 in which the whisk is mounted has a bottom 20 inclined in parallel with the bottom of the whisk and has a central discharge opening 21. The latter is closed by a door pivotally mounted between a pair of links so as to be movable in both the horizontal and vertical planes. An alternative construction of container is described, having a flat bottom and a pivotally mounted discharge door maintained closed by a weighted lever.
Patent GB-894924-A (GB)
Title: Improvements in or relating to curable polyurethane compositions
IPC: C08G18/66
Filed: 1960-01-29
Abstract: A process for producing a fluid curable, polyurethane composition comprises reacting together stepwise or simultaneously at temperatures of 25 DEG  to 100 DEG  C. and under substantially anhydrous conditions (a) at least one organic diisocyanate, (b) at least one polyether glycol (a polyalkylene-ether glycol, polyalkylene-aryleneether glycol, polyalkyleneether-thioether glycol or polyalkylene-aryleneether-thioether glycol) with a molecular weight of 900 to 2500, and (c) a low molecular weight glycol of molecular weight not more than 350 until substantially all the hydroxyl groups have reacted, the overall molar ratio of polyether glycol to low molecular weight glycol being 1:0,5 to 1:3 and that of diisocyanate to total glycol being 1,5:1 to 2,0:1.  Lists of suitable reactants are given.  Glycols specified for (c) include compounds having phenyl, cyclohexane or cyclohexene rings, ether groups and ethylenic links.  The fluid compositions can be cured by reaction with an arylene diprimary amine having a pKb value of at least 9,70 or an organic polyhydroxy compound or both.  Amines specified are 4, 41-methylene-bis-(2-chloroaniline), 4, 41-methylene bis (2-carbomethoxyaniline), 4, 41-diaminodiphenyl sulphide, 4, 41-diaminodiphenylsulphone, 4, 41-methylene-dianiline and 4, 41-methylene-bis (2-methoxy, 2-methyl or 3-bromoanilines). Polyhydroxy compounds include those employed as reactant (c) and also various triols, triethanol-amine, tripropanolamine and N, N, N1, N1-tetrakis-(2-hydroxyethyl) ethylenediamine.  Examples describe the preparation of fluid compositions and their curing, the reactants employed being (1) and (2) polytetramethyleneether glycol, 1, 4-butane diol, toluene-2, 4-diisocyanate and 4, 41-methylene-bis-(2-chloroaniline); (3) polypropyleneether glycol and other reactants as in (1); (4) as in (1) except that the glycol is ethylene glycol, 1, 3-butane glycol, 1, 5-pentane diol, 1, 6-hexane diol, 1, 10-decane diol or 2, 5-di-(hydroxymethyl)-tetrahydrofuran; (6) as in (1), except that mixed 1, 4-butane diol and trimethylol propane with phenthiazine as antioxidant is used in the curing. Specification 733,624 is referred to.
Patent GB-1043994-A (GB)
Title: Dioxolane derivatives
IPC: A61K31/00
Filed: 1963-08-08
Abstract: The invention comprises (1) (2,3-isopropyl-idenedioxy) - propyl anthranilate and the preparation thereof by the catalytic hydrogenation of (2,3-isopropylidenedioxy)-propyl o-nitrobenzoate, and (2) (2,3-isopropylidenedioxy)-propyl o-nitrobenzoate and the preparation thereof by condensing o-nitrobenzoyl chloride with 2,2-dimethyl-4-hydroxymethyl-1,3-dioxolane in the presence of a tertiary organic base.
Patent GB-1448462-A (GB)
Title: Reverse osmosis membranes
IPC: D06N7/00
Filed: 1973-08-16
Abstract: 1448462 Coated fibrous substrates EASTMAN KODAK CO 16 Aug 1973 [21 Aug 1972] 3344/76 Divided out of 1448461 Heading B2E [Also in Division Dl] A water permeable woven fabric is coated with polymeric dope to form a semi-permeable integral polymeric film membrane the woven fabric comprising woven substantially unsized warps and wefts of continuous monofilaments of fibre forming crystalline organic thermoplastic resin, the fabric being free of interstices adjacent strand intersections. The resin is a fibre forming polyester or polyolefin such as polyethylene tetraphthalate. The subject matter disclosed is similar to that of Specification 1448461.
Patent GB-589922-A (GB)
Title: Improvements in toy building elements
IPC: A63H33/08
Filed: 1945-02-10
Abstract: 589,922. Toy building bricks. GROVES, L. Feb. 10, 1945, No. 3387. [Class 132 (iii)] Toy building bricks, blocks or slabs have one face 1b, Fig. 1, scored or marked to represent a plurality of smooth or flat faced bricks and an opposite face 1a, Fig. 2, formed with a roughcast surface to represent a stone building block, so that either face may be presented outwards according to the kind of building it is intended to represent. Corner bricks are formed with two adjacent flat or roughcast faces 1a, 1c, Fig. 2. The bricks or slabs are provided with pegs 2 at one side or edge and recesses 3, Fig. 5, in the opposite side to enable them to be secured together. Coping plates 6, Fig. 1, having recesses 5 are provided to accommodate the pegs 2 protruding from the top of the wall. The bricks may be curved or rectangular and arch bricks may take the form shown in Fig. 11. Slabs for use as miniature roof tiles have one face 13b, Fig. 13, representing a flat tile or plurality of flat tiles and the opposite face 13a, Fig. 12, roughened or moulded to represent part of a thatched roof. The roof slabs, in addition to peg and socket engagement members 15, are also provided with tongue and groove engagement members 16, 17. The bricks may be formed from synthetic resins or other material preferably by moulding and they also may be coloured. Opposite faces may be differently coloured.
Patent GB-1164952-A (GB)
Title: Improvements in Press Concentrators of the Kind Used for Concentrating Sludges and the like.
IPC: C02F11/122
Filed: 1968-01-23
Abstract: 1,164,952. Press filter with residue discharge means. MASKINATIEBOLAGET N.A.E.I.E. 23 Jan., 1968 [26 Jan., 1967], No. 3491/68. Heading B1D. A press filter for sludge, &c., comprises a feed funnel 2, perforated-drum filter 3, press plunger 4, a cone 5 for reacting against the plunger, and is characterised in that a sleeve 6 is axially reciprocable within drum 3 and has holes 7 to take up compressed sludge and remove it from drum 3. As described, exprimed moisture is discharged by funnel 15, whereas compressed sludge is caused to fall into compartment 16 by compressed air emanating through holes 9 in the base of cone 5; a conveyor (not shown) may then remove it from the apparatus. 10 and 11 are rams. In a modification (Fig. 3, not shown), the apparatus is arranged vertically, and the press plunger (24) is fixed while the other parts reciprocate in gang, discharge sleeve (26) having a further independent movement.
Patent GB-1454722-A (GB)
Title: Organic peroxides
IPC: C08F4/28
Filed: 1975-01-27
Abstract: 1454722 Polymerization initiator PEROXID-CHEMIE GmbH 27 Jan 1975 [29 Jan 1974] 3545/75 Heading C3P A polymerization initiator consists of a pinaryl perester, e.g. peroctoate or perbenzoate.
Patent GB-547898-A (GB)
Title: Improvements in or relating to the treatment of ferro-titaniferous materials
IPC: C22B34/12
Filed: 1941-03-14
Abstract: 547,898. Treating titanium ores. TITAN CO., Inc. March 14, 1941, No. 3554. Convention date, March 16, 1940. [Class 82 (i ] [Also in Group III] The titanium percentage content, of ferrotitaniferous material is increased by reducing contained iron compounds to metallic iron, converting this into oxides and removing the resulting iron oxygen compounds from the residual titanium concentrate. The material used may be ilmenite or ores of much lower titanium content, the reducing agents may be solid or gaseoushydrogen, carbon monoxide, coal gas and water gas are mentioned-and the kiln may be rotary. The reduced material may be stored if left dry. Oxidation is preferably by air in combination with water or steam, and electrolytes such as Na Cl, Mg Cl 2 , Ca (NO 3 ) 2  HCl and HNO 3  may be added to accelerate the reaction. Other oxidizing agents are nitric acid, nitrates, chlorates and perchlorates.
Patent GB-214370-A (GB)
Title: Improvements in or relating to the liquid fuel feed for internal combustion engines
IPC: F02M37/02
Filed: 1923-02-07
Abstract: 214,370. Sephton, W., and Carter, J. Feb. 7, 1923. No Patent granted (Sealing fee not paid). Vacuum apparatus.-A fuel suction chamber arranged between the reservoir and a carburettor is made of two glass cylinders c, d arranged between a partition e and end covers f, g connected by common rods h. The top cover carries a reservoir connection i and a detachable floatoperated valve and casing connected to a source of suction l. The. valve m, which controls suction ports n<1> in a disc and air ports o, m<3> in the casing communicating with the exterior and interior of the chamber respectively, has a central passage m<2> communicating with the interior of the chamber. The partition e has a non-return valve s, and an air passage t communicating with an up tube m, Fig. 4.
Patent GB-697118-A (GB)
Title: Improved mechanism for loading or unloading or stacking baled hay or the like
IPC: A01D87/12
Filed: 1951-02-14
Abstract: 697,118. Endless conveyers. ALLAN, K. T. Feb. 14, 1951. [Nov. 17, 1950] No. 3613/51. Class 78 (i). Mechanism fur loading or unloading or stacking baled hay or the like consists of an endless conveyer a part including the pick-up end, or the whole of which is inclinable about an axis remote from the pick-up end, and which is driven from une power take-off of a tractor or the like upon which it is detachably carried, wherein the endless conveyer consists of chains provided with cross bars having spikes fitted to them to engage the bales, and a spiked pick-up roller is disposed forwardly of the pick-up end of the conveyer, being driven by sprocket chain from the conveyer and being adapted to engage and lift bales on to the pick-up end of the conveyer. As shown, the endless chains 17 carrying crossbars 18 fitted with tines 19 are carried by sprockets 12, 13 on end shafts 14 journaled in a tubular frame 10. The upper shaft 14 is additionally journaled in bearings 16, Fig. 7, carried by U-shaped members 27 on the upper ends of two vertical bars 25 fixed to a horizontal bar 26 in turn secured to the tractor 22, so that frame 10 may pivot in a vertical plane about shaft 14. The bearings 16 are held in the members 27 by vertical pins 28 which may be withdrawn to allow the conveyer to be removed from the tractor, by removing the bearings 16 from the members 27. The upper shaft 14 is driven from the power take-off shaft 29 of the tractor through bevel gears 31, 32 and a sprocket connection 35. The pickup roller 37 is provided with spikes 38 and driven by sprocket connection 40 from the lower shaft 14. The teeth of the sprockets 12 are rounded so that if an obstruction stops the pick-up roller 37 chains 17 can slip around the sprockets 12. The framework 10 comprises side walls to guide bales of hay &c. along the conveyer and is provided with outwardly curved extensions 43 acting as a funnel to guide bales onto the conveyer. Tyred wheels 21 support the forward end of the frame on the ground and the frame is located laterally between two vertical bars 23. A bar 45 can be inserted between bars 23 to hold the conveyer in elevated position. Extensions 47 are pivotally mounted on the rear of the frame forming a shoot to direct the material onto a trailer 48 or to a stack. These may be curved to direct the material laterally. The framework may be disconnected from the tractor and the tractor reversed, after which the framework is reconnected so that the feed end of the conveyer is highest, for feeding bales from .a vehicle or stack to another vehicle or stack. The conveyer drive is reversible for a similar purpose. A plurality of pick-up rollers 37 may be employed. In a modification, Fig. 8, the endless chains 17 extend along the length of a modified frame 10 which is in two portions hinged together at 44, and mounted vertically above a tractor having a wide wheel base.