baber/WOPTO huggingface dataset:
Patent GB-1216167-A (GB)
Title: Process for the vulcanisation of fluorinated polymers
Inventor: BARNEY ARTHUR LIVINGSTON
IPC: C08K5/159
Filed: 1969-07-11
Abstract: 1,216,167. Vulcanizing fluorinated elastomers. E. I. DU PONT DE NEMOURS & CO. 11 July, 1969 [25 Feb., 1969], No. 35169/69. Addition to 1,188,247. Heading C3P. A saturated fluorinated elastomeric polymer is vulcanized by heating the polymer in the presence of a polyhydroxy compound or dithiol as such or as an alkali metal or alkaline earth metal salt thereof, as curing agent, and, as accelerator, up to 5 parts by weight per 100 parts of polymer of a cyclic polyether of formula - (-O-X-)- n  in which n is an integer from 4 to 10, and each of the X radicals, which may be the same or different, is (a) R being a hydrogen atom or an alkyl radical; with the proviso that, if one or more radicals -O-(b)- or -O-(c)- are present, each such radical is linked at each end to a radical -O-(a)-, the heating being carried out in a weakly basic system comprising an alkali or alkaline earth metal salt of a carboxlic acid or of a chlorinated phenol or chlorinated thiophenol in an amount providing 0À1 to 20 carboxylic acid, phneol or thiophenol groups for each hydroxy or thiol group of the polyhydroxy compound or dithiol. By "saturated" is meant the substantial absence of additionpolymerizable carbon-to-carbon double bond but does not preclude the presence of up to 5 weight per cent of perfluoroaromatic side drain groups on the polymer. In the Examples a terpolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene is vulcanized in the presence of 2,5,8,15,18,21- hexaoxatrichylo[20.4.0.09-14] hexacosane, 2, 3- 11,12- dibenzo-1,4,7-10,13,16-hexaoxacyclooctadeca-2,11-diene, magnesium oxide, carbon black, sodium stearate, hydroquinone, calcium hydroxide, potassium stearate, sodium benzoate and potassium pentachloro thiophenolate.
Patent GB-1105796-A (GB)
Title: Method of isolating anthracene, phenanthrene and carbazole from mixtures of the same
Inventor: GLUZMAN LJUBOV DAVYDOVNA
IPC: C07D209/84
Filed: 1966-08-05
Abstract: Mixtures of carbazole with phenanthrene and/or anthracene (e.g a crude anthracene) are separated by fractional azeotropic distillation in the presence of glycerol or triethylene glycol, followed by further purification.  The amount of glycerol or triethylene glycol used is usually 3-4 times that of the mixture to be separated, and during the distillation further solvent is added to the mixture in an amount equal to the distillate being obtained.  The azeotropes collected are the 250-270 DEG  C. fraction in the case of glycerol, and the 265-275 DEG  C. fraction in the case of triethylene glycol. Carbazole remains in the residue, and anthracene and/or phenanthrene are collected in the azeotrope, from which they are recovered by the following steps:-  (a) The azeotrope is mixed at 200 DEG  C. or above with 5 times its weight of a solvent such as toluene, xylene or naphtha, anthracene and phenanthrene being precipitated and filtered off at 80-100 DEG  C.;  (b) The precipitate is dissolved in 5-10 times its weight of a solvent such as xylene at 100 DEG  C., followed by cooling to 30 DEG  C., anthracene being precipitated; and  (c) The filtrate from (b) is distilled first to remove solvent and then phenanthrene is collected at 315-345 DEG  C. and is purified by recrystallization.ALSO:Carbazole is separated from admixture with phenanthrene and/or anthracene (e.g. from a crude anthracene) by fractional azeotropic distillation in the presence of glycerol or triethylene glycol. The amount of glycerol or triethylene glycol used is usually 3-4 times that of the mixture to be separated, and during the distillation further solvent is added to the mixture in an amount equal to the distillate being obtained. Carbazole remains in the residue.
Patent GB-793579-A (GB)
Title: Improvements relating to electrically heated mesh screens or mesh panels
IPC: H05B3/00
Filed: 1955-12-08
Abstract: 793,579. Electric heating panels and screens. WODEN TRANSFORMER CO.. Ltd., and MITCHELL. H. W. March 22. 1956 [Dec. 8, 1955], No. 35228/55. Class 39(3) Current supply bars which are secured to a mesh heating panel or screen have a plurality of points along their length for connection to the secondary winding of a supply transformer, the even voltage thus produced along each bar ensuring an even flow of current across the panel or screen. As shown, the end a of a mesh panel 1 has a current supply bar 6 provided with flexible connectors 7 secured at spaced intervals, the other ends of the connectors being connected via a bar 5 to one terminal of the secondary winding of a transformer 4. The end b of a similar panel 2 is connected in like manner to the other terminal of the transformer winding and the two panels are connected at their other ends c, d, by further current supply bars, flexible connectors 7, bars 5, and a cross bar 9. In Fig. 3 (not shown), only one mesh screen is provided, each end being connected, via a supply bar having a plurality of connecting points, to a terminal of the transformer. The heater may be used for drying paint or for drying material as it passes over the heater.
Patent GB-157890-A (GB)
Title: Self-braking engine
IPC: F01B17/04
Filed: 1920-12-16
Abstract: 157,890. Reed, G. B. Jan. 7, 1920, [Convention date]. Cam gears; beat or lift valves; rotary and oscillating cylindrical valves; slide valves, piston and flat; value spindles.-An engine is provided with continuous automatic braking means which are brought into play by a hand-controlled lever. During braking, the ordinary exhaust is closed and the normal fluid supply cut off by a rotary valve, and an auxiliary fluid supply to the cylinder C controlled by the piston at the end of the forward stroke is compressed during the return stroke until the pressure is sufficient to force the inlet valve off its seat whereupon it exhausts through a passage controlled by the rotary-valve. In the construction shown in Fig. 1, the inlet and exhaust are controlled bv the lift valves A, E operated by a pair of longitudinally adjustable cam shafts m, y controlled by a hand-lever i<2>, Fig. 2<a>. The cams operate the valves by levers; the lever operating the exhaust valve is adjustably mounted upon an eccentric s, Fig. 2<c>. To the spindle of the inlet valve A is secured an auxiliary spring-pressed piston B which is open to the atmosphere below and also above during normal working, but during braking is pressed down by the supply fluid. The fluid supply of the engine is controlled by a throttle-valve T, and a rotary valve F which also controls the exhaust and the auxiliary supply to the piston B and cylinder C. The valves T, F and eccentric s are simultaneously operated by a lever D, Fig. 2, which may also control a valve in the cylinder auxiliary supply for braking. During normal running, fluid passes through passages z, k<1>, n<1> in the valve F, o<1> to the cylinder, and exhausts through passages p<1>, q' in the valve F, r<1>. The cylinder C, and top of piston B are put into communication with the exhaust by auxiliary connections u<1>, s'. During braking, the valve F closes the passage p<1> and puts the passages k<1>, s<1>, o<1>, r<1> into communication as shown, and the eccentric s is adjusted to keep the valve E closed. A modification is described wherein a lift inlet valve is applied to a uni-flow engine. The engines with lift valve may be double-acting. Modifications of the braking-means adapted to uniflow and reverse-flow engines having flat and piston slide valves are described. In the case of engines with flat slide valves, the valves, during braking, are held to their seats by auxiliary pistons having balls or rollers engaging the back of the valves. To permit yielding under compression during braking, a flat valve is made in two parts hinged together, the valve-rod being pivoted to the hinge spindles. The invention is applicable to engines with Corliss and rotary valves, and to multiple-cylinder engines.
Patent GB-995710-A (GB)
Title: Improvements in or relating to superconductive materials
IPC: H01L39/14
Filed: 1963-09-09
Abstract: 995710 Super-conductors INTERNATIONAL BUSINESS MACHINES CORPORATION 9 Sept 1963 [10 Sept 1962] 35464/63 Headings H1A AS and A4D A super-conductive composite electrical conductor is made by placing a metal superconductive at a given temperature in a sheath of metal which is not super-conducting at that temperature, reducing the cross-sectional area to form a unit conductor, grouping a plurality of units into a bundle and reducing the overall cross-section of the bundle. By repeated applications of this process filaments of super-conductor may be produced whose diameter is of the same order as the magnetic field penetration depth of the super-conductor. The diameter reduction may be achieved by swaging or drawing. In one embodiment the filaments are of lead and the sheath of aluminium. As the number of applications of the process increases, the resulting wire tends to take on super-conducting properties intermediate those of the two materials involved, e.g. a transition temperature of 3À4K was achieved, as compared with 7À2K for lead and 1À1K for aluminium. The method may therefore be used in the production of cryotron switching devices operating at specific temperatures. For producing a device having a high critical field, the electrons both of the filament material and the sheath material should have a small mean free path. In the ultimate limit the sheath material can be an insulator e.g. silver chloride. The filament material may be lead. In another such device the sheath may be an aluminium-zinc alloy and the filaments may be of a lead-bismuth alloy.
Patent GB-386427-A (GB)
Title: Improvements in or relating to matchbox holders
IPC: A24F27/08
Filed: 1931-12-22
Abstract: 386,427. Matchbox holders. CUTLER, E. N., 4, Park Hill Rise, Croydon. Dec. 22, 1931, No. 35479. [Class 18.] A matchbox holder of sheet metal or moulded material, such as synthetic resin, comprises a tube or framework 14, 15 completely enclosing the outer shell of an ordinary drawer-and-shell matchbox, which rests on ledges 16 and is engaged by projections 18 beneath which the ends of the bottom of the shell spring, so that normally when the box has been emptied it is removed by being broken away. A tray 10 with a door or an insertion hole 9, or a drawer serves for containing used matches. In a modified form the bottom of the shell abuts upstanding walls at the ends of the frame and the shell is held by one or more inwardly projecting barbs or an inwardly projecting lug preferably arranged near the middle of the top. A chain and tab may be provided for securing the holder to prevent loss.
Patent GB-1359662-A (GB)
Title: Data communication systems
IPC: G06F13/22
Filed: 1971-07-28
Abstract: 1359662 Data transmission HONEYWELL INFORMATION SYSTEMS Inc 28 July 1971 [30 Sept 1970] 35534/71 Heading G4A [Also in Division H4] A data communications controller 5 is connected by sub-channels 6a-6n to terminal devices 11a-11n. Normally the sub-channels are scanned in sequence by a first scanner, but, when a priority switch is closed, one of a number of combinations of sub-channels can be chosen, using a selector switch, which combinations have priority over the others and are scanned by a second scanner. The priority switch is closed when one or more of the terminals requests such action and when no priority requests are received normal scanning is resumed. A data processor 1 is connected to a memory controller 2 and a memory 3 (e.g. magnetic core), and controller 2 is connected by multiplexer 4 to controller 5 and the sub-channels 6a-6n (e.g. 32 of them). Each sub-channel is connected to a terminal device 11a-11n, e.g. magnetic tape handler, paper tape or punched card readers by a telephone line. The controller 5 includes the first and second scanners which are counters (Fig. 3a, not shown) and a decoding matrix which supplies enable signals to the subchannels. The second scanner can scan either 2, 4, 8, or 16 sub-channels as priority though if an odd number, e.g. 3 or 5 is required to have priority a modified system (Fig. 7, not shown) may be used.
Patent GB-171051-A (GB)
Title: Improvements in or relating to charge mixing devices for internal combustion engines
IPC: F02M29/04
Filed: 1920-12-20
Abstract: 171,051. Weller, J. A. Dec. 20, 1920. Gas - mixing appli. ances. - A mixing-device for the charge of an internal-combustion engine comprises a helical spring d having secured to the interior of its convolutions a strip of gauze, perforated plate or the like c. The gauze or the like may be corrugated or otherwise formed to increase the resistance to the passage of the mixture.
Patent GB-467912-A (GB)
Title: Improvements in or relating to fluid pressure gauges
IPC: G01L7/00
Filed: 1935-12-24
Abstract: 467,912. Elastic-diaphragm pressure gauges. SIMMS MOTOR UNITS, Ltd., and SIDNEY, A. A. Dec. 24, 1935, No. 35743. [Class 106 (ii)] The instrument comprises two diaphragms to which the fluid pressure is applied, means controlled by the diaphragms whereby two different forces are obtained, the difference between which is proportional to the fluid pressure and operates indicating means. The fluid passes through a nozzle 2 and passages 3 in a cylindrical body 1 to chambers 4, 5 arranged at each side of the body. The chambers are closed by diaphragms 6, 7 of oiled silk or flexible metal. Arranged between the diaphragm and bearing against them are pistons 8, 9 of unequal cross-sectional area and rigidly connected together. The smaller piston 8 is hollow and houses a spring 10 bearing at one end against the diaphragm 6 and urging the piston assembly to the right. The piston 9 is provided with a series of grooves 11 forming a rack which gears with a pinion on the spindle 12 of an indicating needle 14. In a modification, the piston assembly engages an arm of a toothed quadrant geared to the pointer spindle.
Patent GB-939587-A (GB)
Title: Compressor unloading means
IPC: F04B49/24
Filed: 1961-10-04
Abstract: 939,587. Compressors. TRANE CO. Oct. 4, 1961 [Dec. 29, 1960], No. 35815/61. Class 8(1). A compressor is provided with unloading means comprising an annular piston member 36 which is spring-loaded towards a suction valve 22 and is associated with valve engaging means such as spring-biased pins 48 which are adapted to be moved by the piston member 36 to hold the suction valve open, and means being provided to supply fluid, e.g. oil, to a cavity 80 in response to the compressor loading conditions in order to force the annular piston member 36 against its spring-loading to allow the suction valve 22 to return to the normal operating position. The compressor has a piston 16 driven by a connecting rod 18 and operating in a cylinder defined by a cylinder liner 24. Gas passes from a suction chamber 12 to the cylinder under the control of the suction valve 22 and compressed gas passes from the cylinder to a discharge chamber 28 under the control of a discharge valve 26, the valves being spring-biased to the closed positions thereof. A crankcase 42 is separated from the suction chamber 12 by a partition 40 having an annular portion 38, and the annular piston member 36 is disposed in an annular chamber formed between the portion 38 and the cylinder liner 24, sealing means 64 being provided in the annular chamber. The compressor is preferably provided with a plurality of cylinders and is associated with refrigeration means comprising a condenser 30, a receiver 33, expansion means 34 and an evaporator 14 U.S.A. Specification 2,673,025 is referred to.
Patent GB-880697-A (GB)
Title: Improvements in and relating to nuclear reactors
Inventor: LUDOLFRITZ HUGO HEINRICH
IPC: G21C1/18
Filed: 1958-11-07
Abstract: 880,697. Nuclear power plant. PARSONS & CO. Ltd., C. A. Oct. 26, 1959 [Nov. 7, 1958], No. 35857/58. Class 39(4) As shown, the turbine 7 is driven by superheated steam from the core 2 of the reactor 1. After leaving the turbine the condensate is conveyed to the de-superheaters 3-6. Superheated steam from core section A mixes with the condensate in 3 which is converted to steam near the saturation point. This then passes to section B, is superheated and passed to the de-superheater 4, where it is mixed with further condensate which is vapourised and then superheated in section C. Upon leaving the final section E, the superheated steam passes, first, to the heat exchanger 22 where it produces vapour for the section A from condensate and then proceeds to the turbine. The reactor fuel element is of the form described in Specification 873,552.
Patent GB-467674-A (GB)
Title: Device for delivering measured quantities of liquids
IPC: G01F11/22
Filed: 1936-12-08
Abstract: 467,674. Delivering measured quantities of liquids. BUTLER, S. A. V. Dec. 8, 1936, No. 35949/35. [Class 106 (v)] In a device for delivering measured quantities of liquids comprising a hollow tapered plug 7 forming a measuring chamber with inlet and outlet ports 10, 11 and an air vent 14 rotatable within a body 1 having inlet and outlet ports 2, 5 and an air vent 15, the rotation of the plug is limited by a pin 13 projecting into a gap 12 formed in the small end of the body and the air vents 14, 15 are arranged so as to permit the passage of air only when the plug is in the delivering position.
Patent GB-325891-A (GB)
Title: Improvements in or relating to machines for channelling boot and shoe soles
IPC: A43D43/02
Filed: 1928-12-06
Abstract: 325,891. Gimson Shoe Machinery Co., Ltd., and Wardle, W. Dec. 6, 1928. No Patent granted (Sealing fee not paid). Stationary-cutter machines.-In a machine in which a channelling knife is angularly adjustable during the channelling operation, the movable knife is mounted upon a fixed part of the machine. The lower feed-roll 1 is mounted on a shaft 2 carried in a slide 6 which is treadle depressed against the urge of a spring 10 for insertion of the work piece. The upper roll 9 is carried by the fixed frame 4 on which is mounted an arcuate slide 21 supporting the knife. The feed rolls are geared together and driven by a, handle H. As applied to a machine in which the lower feed wheel is positively rotated during a change in the angularity of the knife, means may be provided by which the wheel is lowered without effecting the feed or the knife. Specification 315,812 is referred to.
Patent GB-1274285-A (GB)
Title: Thermal insulation for fluid storage or transfer devices
IPC: F16L59/153
Filed: 1969-07-17
Abstract: 1,274,285. Thermally insulated tubes. VACUUM BARRIER CORP. 17 July, 1969 [24 July, 1968], No. 36017/69. Heading F2P. A semi-flexible cryogenic tube comprises an inner corrugated tube 10 separated by a helically wound spacer 12 from a helically wound tube 14, of heat conducting material, in contact with a thermally conducting layer 16 which surrounds tube 10, fibrous insulating layers 20, and an outer corrugated tube 24. Heat which leaks through insulation 20 is collected by layer 16 and removed by cooling fluid passed through tube 14. The helical spacer 18, which separates insulation 20 from layer 16, is laid with the opposite pitch to that of spacer 12. The spaces between inner tube 10 and outer tube 24 are evacuated. The fluid passing through the heat conducting tube 14 may be bled from the inner tube 10. Additional layers of heat conducting tubes, heat conducting layers and helical spacers may be provided to increase the insulation. The tube is suitable for the transfer of liquid helium, and, with the addition of an appropriate electrical conductor, as a superconducting cable.
Patent GB-176914-A (GB)
Title: Improvements in pulp beating engines
IPC: D21D1/02
Filed: 1920-12-23
Abstract: 176,914. Mahler, E. Dec. 23, 1920. Pulping-engines.-In a beating-engine wherein the beater roll is mounted to yield vertically, a scraper 26, used to deflect the stock towards the backfall 21, is pressed towards the roll by springs 31, and the scraper is provided with downwardlyextending arms 28 resting on annular ribs 27 on the beater roll, whereby the scraper rises and falls with the beater roll. The back fall 21 rises to a point near the level of the top of the beater roll.
Patent GB-762974-A (GB)
Title: Dehydrating alcohols by extractive distillation
Inventor: CHAPMAN ALFRED ERIC
IPC: C07C7/08
Filed: 1953-12-30
Abstract: Aqueous alcohols are dehydrated by extractive distillation employing as extractant a hydrocarbon having boiling-point at least 40 DEG C. above that of the alcohol, whereby the water passes over in the distillate leaving a still-residue comprising a substantially anhydrous mixture of the alcohol and hydrocarbon; this mixture is then subjected to further distillation in order to separate the alcohol.  Ethyl, n-propyl and isopropyl alcohols may be dehydrated by the process.  Suitable hydrocarbons are cumene, ethylbenzene and diethylbenzene.  The extractive distillation is preferably carried out continuously in a fractionating column equivalent to at least 20 theoretical plates; and is operated to obtain a bottoms mixture containing 5 to 25 per cent alcohol.  In an example aqueous isopropyl alcohol (containing 12 per cent water) was fed to a 32-plate fractionating column at the 15th plate above the reboiler. Commercial cumene (containing about 5 per cent of low boiling impurities) was preheated to the stillhead temperature, and then fed to the top plate.  The distillate separated into two phases; and the upper phase (which comprised cumene, isopropyl alcohol and a little water) was returned to the column at the feed point.  The bottoms from the column comprised 10 per cent isopropyl alcohol in cumene, and this mixture was fractionated to separate the alcohol from the cumene. Substantially dry alcohol and cumene were obtained; but it was found that the impurities present in the cumene employed has been extracted into the isopropyl alcohol.
Patent GB-982217-A (GB)
Title: Improvements in or relating to artificial hands
Inventor: COLLINS DENNIS WILLIAM
IPC: A61F2/58
Filed: 1962-09-26
Abstract: 982,217. Artificial hands. PYE Ltd. Sept. 4, 1963 [Sept. 26, 1962], No. 36469/62. Heading A5R.  In an artificial hand the pivots between adjacent phalanges of each finger are not fixed with respect to the associated phalanges. Preferably adjacent phalanges have co-operating, curved surfaces which permit a rolling action when the fingers are bent. Each finger has three phalanges, as 1a, 1b, 1c, having grooves along their inner faces through which a cord 3 extends. This is attached to the outermost phalange 1c and extends to a sliding member 5 connected to suitable actuating means. The segments of the thumb are similarly arranged and connected to the member 5 but, in addition, the thumb has a transverse pivot 12 about which it may be moved by a cord 14 and actuating member 15. The fingers and thumb may be extended by return springs or a closed loop may be provided whereby movement of the member 5, 15, in one direction opens them and, in the other direction, closes them. In each case each finger is made bendable by co-operating curved surfaces on adjacent phalanges rolling on each other, as indicated in Fig. 4. Lateral movement is prevented by a projecting tongue 10a &c. engaging in a complementary slot in the adjacent phalanx and the components of the joints are held together by the tension in the return cord 6.
Patent GB-771110-A (GB)
Title: Improvements in or relating to the drilling of wells
Inventor: HAGAN BURGESS MELLOR
IPC: C09K8/20
Filed: 1955-12-20
Abstract: 771,110. Boring earth and rock. GENERAL MILLS, Inc. Dec. 20, 1955, No. 36522/55. Class 85. A drilling mud contains guar gum (a cold water dispersible galactomannan) or a derivative thereof. The mud may have a pH of 8 to 11 or contain salt water. The guar gum forms a thin tough film over the borehole wall and stops water filtering out in porous stratum and also prevents water penetrating " heaving shale" stratum and causing it to swell. The gum can selectively flocculate and throw out unwanted solids in the mud while retaining desirable solids.