baber/WOPTO huggingface dataset:
Patent GB-944344-A (GB)
Title: Polycarbonate compositions
IPC: C08G64/10
Filed: 1960-05-25
Abstract: A polycarbonate composition comprises a mixture of (a) a homopolycarbonate of 2,2-bis (4-hydroxyphenyl) propane and (b) a homopolycarbonate of 2,2-bis(3,5-dichloro-4-hydroxyphenyl) propane; the mixture comprising 40-80 mole per cent of units of polycarbonate (a) and 20-60 mole per cent of units of polycarbonate (b). Preferably the mixture is dissolved in a chlorinated hydrocarbon (e.g. methylene chloride) and cast into a film which may be used as a packaging material, an adhesive tape base, a kinescope recording tape, or a condenser dielectric or a photographic base (see Division G2). The polycarbonates may be made by reacting the bisphenol with phosgene in the presence of aqueous sodium hydroxide solution, methylene chloride and benzyltriethylammonium chloride, terminating the polycondensation by adding acetic acid, diluting the methylene chloride layer with further methylene chloride and then precipitating the polycarbonate with methanol.
Patent GB-305433-A (GB)
Title: Improvements connected with trouser and like presses
IPC: A47G25/72
Filed: 1928-06-29
Abstract: 305,433. Robson, S. T. June 29, 1928. Trouser and like presses.-The metal straps 5 attached to the upper board of a trouser or like press are provided with slots 7 terminating in recesses 9 which house shoulders 16 formed on the tightening screw 8. The slots are made by cutting the metal and opening it outwardly so as not to remove the metal the recesses being formed by depressing the metal. The pivoted barrel 10 into which the screw passes is made by folding a piece of metal to leave a slot 13, which enables a screw to be freed by pressura in the case of it being tight through rusting or other causes. The depression may be replaced by a projection with a complementary modification of the screw.
Patent GB-912527-A (GB)
Title: A process for polymerization of monomeric mono-olefines and catalysts therefor
IPC: C08F12/08
Filed: 1960-05-27
Abstract: Monoolefines are polymerized by use of a catalyst comprising (1) at least one of Pb, Sn, Bi and Te, together with Mg, the metals being dissolved or suspended in Hg, (2) at least one Group IVa, Va or VIa metal halide and optionally (3) an alkyl or aryl halide.  Preferred components are (2) halides of Ti, Zr, V and Cr, and (3) ethyl bromide or bromobenzene, and it is preferred to effect the polymerization in an inert, e.g. hydrocarbon, solvent. The said metals of component (1) may be in the form of Mg alloys. Specified monomers are ethylene, propylene, butene (e.g. butene-1), pentene, hexene and styrene. Specifications 810,023, 811,633, 820,263 and 823,236 are referred to.
Patent GB-1428266-A (GB)
Title: Adhesive bonding of polyvinyl chloride and other syntehtic resin substrates
IPC: C09J175/16
Filed: 1973-04-19
Abstract: 1428266 Laminates LORD CORP 19 April 1973 [21 April 1972 26 March 1973] 18918/73 Heading B5N [Also in Division C3] A synthetic resin substrate is adhesive bonded to a further substrate by employing a shelfstable composition comprising (A) from 10 to 90% by weight of a monomer component selected from styrene, a (meth)acrylic ester of an alcohol containing 1 to 8 carbon atoms, mixtures of two or more thereof and partially polymerized syrups of one or more thereof; (B) from 90 to 10% by weight of an organic polyisocyanate capped with a hydroxy functional monomer containing at least one unit of polymerizable alpha-beta olefinic unsaturation, and (C) from 0À04 to 4% by weight of the reducing component only of a redox polymerization catalyst as a coating for the synthetic resin substrate and bringing the two substrates into contact with the coating disposed between them and in contact with the oxidizing component of the redox polymerization catalyst whose reducing component is component (C) of the composition. In the examples nylon fabric-reinforced plasticized vinyl strips, steel, polycarbonate plastic sheeting, polysulphone coupons, polycarbonate sections, plasticized polyvinyl dichloride thin strips, cowhide leather, acrylonitrile butadienestyrene copolymer, rigid PVC, pine wood, polystyrene, styrene-acrylonitrile copolymer and acrylic plastic are bonded together.
Patent GB-576520-A (GB)
Title: Improvements in pipe couplings
IPC: F16L19/02
Filed: 1944-10-04
Abstract: 576,520. Pipe joints. KAY, F. Oct. 4, 1944, No. 19024. [Class 99 (i)] The flared end 10 of a pipe is compressed against a packing ring 9 seated on the end face of the coupling member 1 by a coupling nut 4 having an internal flange 5 engaging the flared pipe ends. The flared end may be conical and engage 'the packing by an edge 8, the' angle of the flare being about 30‹. Alternatively the pipe has a curved flare preferably on a radius equal to 1/16 of the diameter of the pipe. The flange 5 of the nut is coned or curved to fit the flare of the pipe.
Patent GB-613707-A (GB)
Title: Improvements in electric rectifier circuits for use with buffer batteries
IPC: H02M7/06
Filed: 1946-06-26
Abstract: 613,707. Charging batteries; converting. PHILIPS LAMPS, Ltd. June 26, 1946, No. 19082. Convention date, April 18, 1942. [Classes 38 (ii) and 38 (iv)] Additional voltage for increasing the charging rate, after a period of heavy discharge, of a battery 16 floating across a main rectifier 1, 2 supplying a load 17, is provided by an auxiliary dry contact rectifier unit 11, 12, the output of which may be switched in series with that of the main rectifier. A resistor 20, normally short-circuited by the switch 13, maintains closed the output circuit of the main rectifier during switching and then shunts the auxiliary rectifier to prevent undue voltage boost under conditions of light load. The main rectifier is preferably fed from the seriesconnected secondary windings of transformers 5, 8, the first of which is supplied through a condenser 7 and operates in a saturated condition, the arrangement giving, over the working range, substantially constant output volts for wide variations in load and input volts. The output voltage of the auxiliary rectifier is about ten to twenty per cent of that of the main rectifier. In a modified arrangement the moving contact of switch 13 is permanently connected to the auxiliary rectifier.
Patent GB-1500018-A (GB)
Title: Flocking of flat textile substrates
IPC: D04H11/00
Filed: 1975-05-07
Abstract: 1500018 Flocked textile sheets BASF AG 7 May 1975 [14 May 1974] 19114/75 Heading B2E A textile sheet is coated with a heat-sensitised aqueous emulsion of a polymer, the coating being flocked at a temperature of up to 200C and gelled simultaneously to or before flocking in the zone adjacent the textile sheet in such a way that the zone remote from the textile substrate does not gel. Suitable textile sheets are woven, knitted or non- woven fabrics made from cotton, cellulose, viscose staple, certain polyamides, polyacrylonitrile, polyethylene terephthalate, polyethylene and/or polypropylene. The emulsion may comprise: polymers of acrylic and/or methacrylic C 1-12  alkanol esters, optionally containing copolymerised acrylic, methacrylic, crotonic or maleic acid or their amides or N-alkoxyamides, or styrene, vinyl acetate and/or acrylonitrile; polymers of butadiene with styrene and/or acrylonitrile, optionally containing acrylic, methacrylic, crotonic or itaconic acids and/or their amides or N-alkoxyamides; or ethylene/vinyl acetate copolymers. The emulsions may be sensitised with poly (vinyl alkyl ethers), oxyalkylated polysiloxanes, or oxyalkylated amines having reverse solubility characteristics. The polymer emulsions may be applied by doctor blade, roller or spraying preferably to a preheated textile sheet. Alternatively the textile sheet may be heated after application. Flocking is preferably carried out electrostatically. In an example a preheated cotton web is knife coated with an emulsion of a copolymer of acrylonitrile, butadiene, acrylamide and methacrylic acid containing, as heat sensitiser, ethylene diamine oxyalkylated with a mixture of propylene oxide and ethylene oxide, then electrostatically flocked with 1 mm long 1 denier fibres and dried at 150C.
Patent GB-759882-A (GB)
Title: Improvements in or relating to apparatus for the manufacture of helically striped extruded coverings on coils
Inventor: HALL RONALD GEORGE
IPC: B29C48/15
Filed: 1954-06-30
Abstract: 759,882. Extrusion - coating cores. BRITISH INSULATED CALLENDER'S CABLES, Ltd. June 29, 1955 [June 30, 1954], No. 19191/54. Class 87(2) Apparatus for extruding a helicallystriped covering upon a core, e.g. an electric wire or cable, comprises a stationary multi-colour extruder 2 which delivers two or more differently-coloured rubber or plastic mixes to different portions of the periphery of an annular extrusion nozzle through which the core is axially advanced, and a pair of flyers 1, 3 which rotate at the same speed and in the same direction. The flyer 1 is behind the extruder and carries a supply reel 18 of th ecore to be covered, and the flyer 3 is in front of teh extruder and carries a take-up reel 49, means for driving the reel and a capstan 47 for hauling the core through the extruder at a constant speed. These fiyers rotate the core as it passes the (stationary) extrusion nozzle, whereby spiral differently coloured coatings are applied to the core. The core supply reel 18 extends transversely across the flyer 1 and rotates about its own axis to pay out the core but is otherwise stationary, this disposition being achieved by journalling the reel in a cradle 19 having trunnions disposed in bearings in the end members 4, 5 of the flyer, the centre of gravity of the loaded cradle being sufficiently below the axis of the cradle trunnions to prevent the cradle being carried around by friction between the bearings in which the cradle is mounted. A friction brake 20 prevents over-running of the supply reel. From the reel 18 the core passes rearwards over a guide roller 22, through the rear cradle trunnion, around a pulley 23, then outwards to the periphery of the flyer, over a pulley 24, forward through a hollow tube 6 forming part of the flyer, inwardly around pulleys 26, 27 and then forwardly into the extruder. From the (three-feed-screw) extruder 2 the spirally-coated core passes forwardly to the flyer 3, where at first it follows a path similar to the core path in flyer 1. Then it passes around capstan 47, over a guide pulley 48 and so on to take-up reel 49. The flyers are driven from a lay shaft 14 via sprockets 16, 40, chains 15, 39 and sprockets 17, 41 on trunnions on the flyers. The double twist imparted to the core by the rear flyer is removed by the front flyer so that the core passes on to the take-up reel without having any rotary movement about its own axis, and is wound on the reel without residual torsional strain. The capstan is driven by a gear 50 attached to the flyer 3, via gears 51, 52. The take-up reel is driven from the capstan via chain drive 53, A flaking gear 54 is provided.
Patent GB-257561-A (GB)
Title: Process for the manufacture of rubber with innumerable microscopically small pores
IPC: C08J9/26
Filed: 1926-08-03
Abstract: 257,561. Beckmann, H. Sept. 1, 1925, [Convention date]. Addition to 240,430. Porous indiarubber.-Manganese salts, particularly the sulphate, are used as coagulating agents in the process of producing porous rubber described in the parent Specification which consists in converting a mixture of latex and vulcanizing agents into a paste and vulcanizing the mixture while wet.
Patent GB-677645-A (GB)
Title: Improvements in methods for the concentration of iron ore
IPC: C22B1/02
Filed: 1949-07-21
Abstract: Ferric oxide-containing ores are treated with hydrochloric acid gas up to 400 DEG C to produce ferric chloride, which is separated by volatilization and treated with a small excess of steam at higher temperatures to produce ferric oxide, and hydrochloric acid for treatment of further ore.  Hydrated oxidic ores may first be dehydrated at 300-500 DEG C; carbonate and magnetite ores should be roasted at 400-800 DEG C.  As shown, the ore is chloridized with two to six times the theoretical amount of hydrochloric acid, preferably first at 100-200 DEG C, and then at 200-400 DEG C in the two-stage fluid bed reactor 6, 7 of Specification 677,690, and the gases pass via cyclones 29, 34 to a brick lined hydrolysis chamber 32 containing tubes 39 heated to 400-800 DEG C by gases from <PICT:0677645/III/1> combustion chamber 37.  Superheated steam is injected through pipe 38.  Ferric oxide deposited in the tubes passes to hopper 41 and is cooled, if desired, as a fluid bed or beds by air passing to combustion chamber 37.  The evaporated gases, say 80 per cent hydrochloric acid and 20 per cent steam, pass via cyclone 43 and heat exchangers 45, 46 to condenser 47, whence the condensed solution passes to the heat exchangers 45, 46 to produce the superheated steam referred to.  Steam from an external source may however, be employed. The evolved hydrochloric acid, with additional gas from reservoir 1 as may be required, is pumped to the chloridizing vessel 6, 7, some of it being heated in heat-exchanger 5 by the combustion gases escaping at 53 from the hydrolysis chamber 32.  Cyclones 29, 34 and 43 may be disposed inside chambers 6, 7 and 32.  The oxide produced may be reduced to iron, or may be mixed with less pure ores, and sintered, briquetted, &c. for use in a blast furnace.  Specification 677,691 also is referred to.
Patent GB-704905-A (GB)
Title: Engine-starting cartridges
Inventor: MILLNS TERENCE WILLIAM
IPC: F02N13/02
Filed: 1951-08-15
Abstract: 704,905. Engine-starter cartridges. ROTAX, Ltd. Aug. 12, 1952 [Aug. 15, 1951], No. 19235/51. Class A cartridge shell a is provided with a hollow cylindrical nose piece b which may be integral with the shell or secured in the forward end. The nosepiece b has two collars c, d of greater diameter than the shell. The larger collar d has an undercut forward face e and a bevelled rear face, while the collar c has an undercut front face f shallower than the face e. The cartridge is intended for use with clamping means gripping only the collars c, d such as is described in Specification 704,906. Specification 685,234 also is referred to.
Patent GB-674788-A (GB)
Title: Improvements in electric motors
IPC: H02K7/065
Filed: 1950-08-02
Abstract: 674,788. Reciprocating machines. DIETZ, M., and CZEMPIEL, F. Aug. 2, 1950 [Aug. 9, 1949], No. 19329/50. Class 35. In an electromagnetic motor having a reciprocating armature driving a toothed wheel, the circuit of the electromagnet is completed through a fixed contact and a sliding contact actuated by the armature through a lost-motion connection. Fig. 2 shows a pivoted armature 5 co-operating with the electromagnet having two coils 1 (only one coil is seen in Fig. 2). The electromagnet circuit is completed by a fixed contact 13 and a sliding forkshaped contact member 12 actuated with a degree of lost-motion by the end of the armature 5 which is pulled back to the unattracted position when the circuit is broken by a spring 8, Figs. 1, 3 (not shown). A ratchet-wheel 24 is rotated step-by-step on each attracted stroke by a pawl 25. Current is supplied to the sliding member 12 by a contact-spring 14 also serving to press the member 12 into a guiding slot formed on an insulating plate 11 superimposed on another insulating plate 10. In a modification, the pawl is constituted by a bladespring 39, Figs. 7, 8 (not shown). Fig. 4 shows the motor enclosed in a U-shaped casing 28 of magnetic or synthetic material in the wall of which a slot is formed to guide the sliding contact-member 32. The latter, which is distinctly shown in Fig. 6, has a recess 35 corresponding to the distance between the projections 15, 16 of the sliding member 12 in Fig. 2.
Patent GB-1039095-A (GB)
Title: Dynamometers
Inventor: DUMBRECK JOHN STUART
IPC: G01L3/22
Filed: 1962-05-21
Abstract: 1,039,095. Automagnetic dynamometers. ROTAX Ltd. March 22, 1963 [May 21, 1962], No. 19405/62. Heading H2A. [Also in Division G1] An eddy current dynamometer for measuring torque comprises an aluminium disc rotor 12 (Fig. 1) on a shaft 10 enclosed by a carrier casing 1, carrying field poles and rotatable angularly about the rotor axis against a resistance which may be a spring balance, and having an inlet 21 and an outlet (Fig. 2, not shown), whereby fluid coolant may be circulated around the rotor. The carrier comprises two dished discs bolted together and journalled in bearings 4 mounted on pedestals 5. Mounted, with fluid-tight seals on the exterior of the carrier discs are two series of equiangularlyspaced polepieces 13 extending parallel to the rotor shaft axis and having pole heads 14 and coils 17. A pair of annular rings 18 respectively, interconnect the polepieces of each series. The spring balance (Fig. 2, not shown), is connected between a stationary base and an arm which projects radially from and is secured to the carrier. The power absorbed by the dynamometer can be varied by varying the field current. The torque may be calculated from the spring balance reading and the speed is measured by a tachogenerator 11.
Patent GB-480101-A (GB)
Title: Improvements in and relating to motor compressors
IPC: F02B71/02
Filed: 1936-07-13
Abstract: 480,101. Air compressors. PESCARA, R. P. July 13, 1936, No. 19476. Convention date, July 15, 1935. [Class 8 (i)] The opposed piston air compressor is started by very high-pressure air from the storage 9 which is introduced into the cylinders 7<1>, 72 by pipes 101, 102. When the valve 15 is opened pressure below the pistons 12<1>, 122 falls to open the valve 8<1>, 8<2> admitting the high pressure to cylinders 6<1>, 6<2> to start the pistons moving. The pressure in the stabilizing cylinders is slowly lowered by the action of the pump 20 which supplies air to the storage 9. The pressure in the cylinders 61, 6<2> is maintained by connecting them to the high-pressure stage through pipes 18<1>, 182 and 21 and the non-return valve 22. The fuel-injection pump 31 has its stroke adjusted by air pressure of the high pressure stage acting on the piston 53. When the engine is stopped valve 24 opens to admit high-pressure air to the underside of piston 2<2> to return it to the starting position. Air also acts on the piston 41 forcing rod 40 downwards to restore piston 2<1> to its starting position. All the starting and stopping operations are controlled by the single lever 46. Specifications 480,010 and 480,095 are referred to.
Patent GB-618883-A (GB)
Title: Improvements in or relating to the manufacture of thin films and coatings
IPC: B29D7/01
Filed: 1946-06-29
Abstract: Thin films are applied to surfaces by applying a layer of an aqueous liquid to the surface to be coated, applying to the surface of said aqueous liquid a thin layer of a solution of a film-forming substance in a solvent containing a diester of a C4-C12 dibasic acid with a C1-C10 alcohol which improves the spreading power of said solution, evaporating the solvent to form a thin film, and removing the aqueous liquid so as to leave said film in contact with the surface to be coated.  The process is applicable to coating cathode-ray tubes: wire mesh is coated by lifting the mesh through the water upon which the film is formed.  The acid may be aliphatic, such as sebacic acid, or aromatic such as phthalic acid.  The alcohol is preferably a C6-C10 alcohol. The preferred ester is di-(2-ethyl-hexyl) sebacate.  The aqueous layer upon which the solution is spread is usually saturated with the solvents, diluents and plasticizers which may be present in the film-forming solution.  Films of cellulose nitrate, cellulose acetate and other film - forming materials may be produced.  In an example, a solution of cellulose nitrate in ethyl ether containing butyl acetate, dibutyl phthalate and di-(2-ethyl-hexyl) sebacate is spread upon an aqueous liquid.ALSO:Thin films are made by applying to the surface of an aqueous liquid a thin layer of a solution of a film-forming substance in a solvent containing a diester of a C4-C12 dibasic acid with a C1-C10 alcohol, which improves the spreading power of said solution, and evaporating said solvent.  Thin films may be applied to surfaces by applying a layer of an aqueous liquid to the surface to be coated, forming the film thereon according to the process of the invention, and removing the aqueous liquid to leave the film in contact with the surface to be coated.  The process is applicable to coating cathode-ray tubes; wire mesh is coated by lifting the mesh through the water upon the surface of which the film is formed.  The acid may be aliphatic such as sebacic acid or aromatic such as phthalic acid.  The alcohol is preferably a C6-C10 alcohol.  The preferred ester is di-(2-ethyl-hexyl) sebacate.  The aqueous layer upon which the solution is spread is usually saturated with the solvents, diluents and plasticizers which may be present in the film forming solution.  Films of cellulose nitrate, cellulose acetate and other film-forming materials may be produced.  In an example a solution of cellulose nitrate in ethyl ether containing butyl acetate, dibutyl phthalate di-(2-ethyl-hexyl) sebacate is spread upon an aqueous liquid.
Patent GB-831732-A (GB)
Title: Stuffing material, upholstery produced from such material and method for its manufacture
IPC: B29D28/00
Filed: 1957-06-21
Abstract: <PICT:0831732/IV (a)/1> <PICT:0831732/IV (a)/2> A sheet 1 of foamed plastics material, preferably nylon, has slits cut therein so that when the sheet is distended apertures 4 separated by ribs 3 are produced.  Preferably the slits 2 are formed in staggered rows as in Fig. 3 and the sheets may be coated with paper or fabric or by uncut slabs of the same or another plastics material, preferably foamed. The sheets may be used for upholstery padding, packing material or carpet underlay and distended sheets may be superposed in crossed relation as in Fig. 1 to form a cushion squab.
Patent GB-1219901-A (GB)
Title: Improvements in or relating to apparatus for predicting results
Inventor: BARROW WILLIAM
IPC: A63F7/00
Filed: 1967-04-28
Abstract: 1,219,901. Apparatus for predicting results. W. BARROW. 24 May, 1968 [28 April, 1967], No. 19605/67. Heading A6H. An apparatus for predicting results comprises a rectangular box 10, having an internal transverse wall 14 provided with a hole 13 through which a ball can pass via an inclined chute 15 onto a fixed sloping plane surface 16 and is constrained to pass around a curved wall 17, which extends around approximately 180‹, until it comes into contact with an adjustable deflector 20 and is caused to return towards the opposite side of the box across the lower part of the surface 16 and onto an adjustable inclined surface 23, pivotally attached by a hinge 24 to the side of the box 10 and which can be given a transverse tilt by movement of arm 25 connected to a linear cam 27, said surface 23 having a number of obstacles, e.g. pins 30, spaced at regular intervals so as to impart a random movement to the ball upon which is superimposed a general bias depending on the inclination of surface 23; at the lower end of 23 the ball issues into one of three outlet apertures 35, 36, 37 adjustable guide blades 39 being provided on each side of aperture 36. The ball is returned to hole 13 by tilting rod 51 to the right so that the ball enters groove 53 of lever 45 and then tilting 51 to the left to raise the lever 45 until the groove 53 is on a level with hole 13. The apparatus enables a bias to be superimposed on random selection by altering deflector 20, the tilt of surface 23 and the guide rods 39, before releasing the ball into the apparatus.