baber/WOPTO huggingface dataset:
Patent GB-1021427-A (GB)
Title: Improvements in or relating to the displacement and/or recovery of oil from oil-bearing rock
Inventor: FERRELL HOWARD HULEN
IPC: C09K8/58
Filed: 1962-08-27
Abstract: 1,021,427. Wells. CONTINENTAL OIL CO. Aug. 27, 1962 [Sept. 11, 1961], No. 32866/62. Heading E1F. Oil is displaced from oil bearing rock by flooding the rock with a solution comprising water and a mixture of X-alkyl benzene sulphonates where X is a cation which forms a compound with the alkyl benzene sulphonate having a solubility of at least 5000 p.p.m. by weight in water and where the average molecular weight of the alkyl benzene moieties in the mixture is between 120 and 218. The solution destroys the surface forces holding residual oil in the rock, the oil emulsifying with and disposing in the solution so that the solution containing oil may be revovered and treated to obtain oil. The mixture is dissolved in the water to form a concentration from 0À5 per cent to 30À0 per cent by weight. The cation may be sodium, lithium, potassium, magnesium, calcium, barium, copper, ammonium and amines.
Patent GB-779878-A (GB)
Title: An improved centrifugal device for the treatment of solid, liquid or gaseous substances or mixtures of substances
IPC: B01F11/02
Filed: 1953-11-27
Abstract: <PICT:0779878/III/1> <PICT:0779878/III/2> <PICT:0779878/III/3> In mixing, emulsifying, grinding or dispersing apparatus comprising a rotor 7 and a stator 8 having co-operating spaced surfaces each of which has an annular series of radial or substantially radial grooves 10, 101, the solid, liquid or gaseous materials or mixture thereof being treated pass from an inlet at the axis of the apparatus to an outlet 91 which discharges the treated material at an angle to the axis.  The stator has an annular series of grooves 102 which extend across the outer ends of grooves 10, 101.  The surfaces of the outlet shown in Fig. 5 converge in the direction of flow, but in modifications the surfaces may be parallel or divergent.  Fig. 6 shows an outlet discharging toward the axis of the apparatus. In Fig. 2 the grooves are not shown but lie in the area 16.  The rotor is driven by a motor 2 and a coupling 4.  The material is fed through a hopper 5 and is finally discharged through a pipe 6. In modifications the apparatus has a vertical axis, and the drive is direct or by means of belts.  Specification 779,877 is referred to.
Patent GB-521231-A (GB)
Title: Improvements in or relating to conveyors for minerals or other materials
IPC: E21F13/06
Filed: 1938-11-14
Abstract: 521,231. Endless belt conveyers. GREGSON, H. Nov. 14, 1938, No. 33067. [Class 78 (i)] Material is retarded during lowering by an inclined conveyer, for example an endless belt conveyer 2 by a number of loosely hanging apron-like members 7, Fig. 1, carrying retarding projections 11. As shown, the upper edge of each member is carried by a sleeve 13 encircling a rotatable cross bar 14 which is mounted in uprights 15 slidable in guides 19 on the casing 6. The uprights are fixed in the desired position by inserting a locking member 20, Fig. 2, in one of the apertures 18 and in a registering aperture in the fixed plate 21. The part 22 of the member 20 within the upright is eccentric to the remainder and prevents accidental displacement. Angle plates 10, 11 are secured to the underside of the apron.
Patent GB-521404-A (GB)
Title: Improved method for the manufacture from ground wood of material suitable for floorsor walls and the improved material
IPC: C08L91/08
Filed: 1938-11-15
Abstract: 521,404. Fibrous compositions. FREY, U. Nov. 15, 1938, No. 33165. Convention date, Nov. 18, 1937. [Class 70] Ground wood is impregnated with paraffin wax which melts at 60-62‹C. and then kneaded with casein glue or a mixture of casein glue, rubber latex and kaolin. The mixture is noulded under pressure into slabs for floors or walls.
Patent GB-1427870-A (GB)
Title: Tables
IPC: A47B9/16
Filed: 1974-07-26
Abstract: 1427870 Ironing tables TOMADO BV 26 July 1974 [31 July 1973] 33200/74 Heading A4H An ironing table comprises a top 2, two pivotally inter-connected leg structures 3, 4, structure 3 being pivotally connected to top 2, and structure 4 being slidably connected to top 2 so as to adjust its height, legs 4 being connected by a shaft 5 having sliders 6 slidable in guides 7 beneath top 2, each slider 6 pivotally carrying a catch 9 that can hold in selected apertures 8 in guides 7 to hold the top against downward movement, and each catch 9 being biased by a coil spring 11 towards a centred non-holding position. When the top 2 is in its lowest working position a projection 12 of each catch 9 grips in aperture 8a, and spring 11 is tensioned by gravity. When top 2 is slightly lifted, projection 12 automatically disengages from aperture 8a and tends to move to its centred position. As the slider and catch are moved along the guide 7 the catch is kept uncentred by the guide. When aperture 8b is reached, the top is released and the projection 12 grips in aperture 8b. The top may be successively raised until in its highest working position, in which projection 12 grips in aperture 8c. When it is lifted further, catch 9 moves into an enlarged aperture 13a and it is pivoted to its centred stable position. Upon subsequent lowering of top 2, the catch 9 moves from left to right and strikes the guide bottom and rotates to a non-holding position. During following downward movement, the rounded side of the catch rides over apertures 8 and eventually into an enlarged aperture 13b, where it rotates to its centred position. Upon subsequent upward movement, it rotates into its holding position. In further forms Fig. 5, (not shown), the catch may be symmetrical and have two projections
Patent GB-999269-A (GB)
Title: Hollow beam electron gun
IPC: H01J23/075
Filed: 1962-08-29
Abstract: 999,269. Electron guns. VARIAN ASSOCIATES. Aug. 29, 1962 [Sept. 18, 1961], No. 33224/62. Heading H1D. An electron gun for producing a hollow beam comprises a cathode having an axially-elongated electron-emissive surface 11 and an anode 39 surrounding, or surrounded by, the cathode, the arrangement being such that in operation, the equipotential surfaces between cathode and anode are tubular and flare outwardly in a non- linear manner at least over a large part of their length. A beam-confining magnetic field is also established between cathode and anode in a generally axial direction inclined with respect to the cathode surface. As shown, the electron gun is immersed in an axial magnetic field B, and includes a frusto-conical emitting surface 11, the cone apex angle of which is preferably 8 degrees but may be as large as 20 degrees or smaller than 2 degrees. The tubular porous cathode is mounted on three sapphire rods 16 extending between ceramic discs 17, 18, and is connected to support 34 by metal straps 35. A cylindrical inner focusing electrode 12 is mounted on tubular support 19, coaxial alignment being ensured by snap-ring 29. Electrode 12 may be at cathode potential or at a bias potential. An outer frusto-conical focusing electrode 13 is mounted on cathode support 34, the angle between cathode surface 11 and electrode 13 being between 115 and 160 degrees, e.g. 135. The bell-shaped anode 39 is designed, analytically or by use of an electrolytic tank model of a planar gun (both methods are described), to produce bell-shaped equipotential surfaces adjacent cathode surface 11 which result in uniform electron emission. The hollow beam thus produced may be used in an injected beam, cylindrical magnetron, or, after a suitable transition region, may be projected into the drift tube 41 of a travelling-wave tube or klystron. In the transition region, the radial electric field is tapered off by tapering the end of the inner focusing electrode 12<SP>11</SP>, Fig. 9, as at 54, 55. In alternative arrangements the cathode surface may be cylindrical, the magnetic field then being outwardly barrelled through the cathode region. Also the bellshaped anode may be replaced by a plurality of rings which may be equally spaced along the gun axis and either equi-potential but of decreasing diameter or of equal diameter and increasing potential. Alternatively, the spacing between successive rings may be increased along the gun axis to provide the required bellshaped equipotential surfaces. The invention may also be employed in an everted gun, Fig. 12, in which the cathode 83 surrounds a bell-shaped anode 78.
Patent GB-1309935-A (GB)
Title: Method of preparing cyclobutane carboxaldehydes
IPC: B01J19/12
Filed: 1970-07-09
Abstract: 1309935 Cyclobutane carboxaldehydes INTERNATIONAL BUSINESS MACHINES CORP 9 July 1970 [28 July 1969] 33322/70 Heading C2C Cyclobutane carboxaldehydes of Formula I (in which each of R 1  and R 2  is H, CH 3 , OC 2 H 5  or CHO and each of R and R<SP>1</SP> 1  is H or CH 3 ) are prepared by irradiating a compound of Formula II with actinic light having a wavelength less than 3200 . A sensitizer such as mercury may be present. The reaction may be effected in the gas phase or in solution in a saturated hydrocarbon or ether. The 2,4-dinitrophenyl hydrazone of cyolo- - butane carboxaldehyde is prepared.
Patent GB-836436-A (GB)
Title: Unsaturated polyesters
Filed: 1956-11-01
Abstract: In the manufacture of unsaturated polyesters containing a ,b -enal groups (particularly those containing chloride by esterifying at an elevated temperature a polyhydric alcohol with one or more polycarboxylic acids comprising an ethylenically unsaturated polycarboxylic acid, lighter coloured products are obtained by conducting a substantial part of the esterification under a sub-atmospheric pressure of 100 to 650 mm. of Hg. absolute. Preferably esterification is started at atmospheric p  pressure and then a mild vacuum of 500-600 mm. of Hg is applied which is reduced in stages, the reaction mixture being continuously sparged with an inert gas.  Finally reaction is effected under a high vacuum, e.g. less than 35 mm. of Hg. Polyesters referred to are those from propylene glycol, maleic anhydride and phthalic or chlorendic acid. The polyesters may be copolymerized with styrene, vinyl toluene, vinyl acetate, diallyl phthalate, diethyl fumarate or methyl methacrylate, using as a polymerization catalyst benzoyl peroxide, methyl ethyl ketone peroxide or cyclohexanone peroxide.
Patent GB-189659-A (GB)
Title: Improvements in and relating to supports for the head lamps of motor road vehicles
IPC: B60Q1/124
Filed: 1921-12-12
Abstract: 189,659. Barker & Co. (Coachbuilders), Ltd., and Fensom, W. T. G. Dec 12. 1921. Vehicle lamps, directing.-A tilting device for motor head-lamps consists of a transversely arranged rocking bar 4 pivoted to supports 2, mounted on the vehicle frame 3 and carrying lamp brackets 5, an arm 6 formed or fixed on the bar 4, a hand lever 7 pivoted to a bracket 9 mounted on the frame 3, and a rod or link 8 coupling the lever 7 to the arm 6, together with a spring device adapted to hold the lever and lamps in either of the two extreme positions. Pivoted to the lower end of the lever 7 is a rod 11, which slides through a rocking-pin 12 mounted in an extension 13 of the bracket 9. A helical spring 16 is arranged between a collar . 14 on the rod and a collar 15, loosely mounted on the rod and abutting against the rocking-pin 12. The helical spring 16 operates to retain the lever either in its forward or aft position, and consequently to keep the lamps either in their normal or dipped positions. A forked bracket 17 carried by or formed on the support 2 and adjacent to the arm 6 is arranged to limit the movement of the arm 6 and the bar 4, and to define the positions of the lamps in the normal and dipped positions, set-screws 18 being provided in each fork of the bracket 17 to act as adjustable stops.
Patent GB-851872-A (GB)
Title: Improvements in or relating to the production of polybutene filamentary materials
IPC: H01B11/00
Filed: 1957-10-25
Abstract: Stretch oriented continuous filaments are produced by melt spinning a linear essentially unbranched, head-to-tail poly alpha-butene having a degree of crystallinity of from 55 to 85% or a mixture of such a polymer and a linear essentially unbranched head-to-tail polypropylene having a degree of crystallinity of from 55 to 85%. The polybutene preferably has an average molecular weight of 100,000 to 300,000 and the proportion of crystalline polymer is preferably 60 to 85%.  The degree of crystallinity is determined by X-ray analysis. The filaments may be stretched to an extent such that their length after stretching is 3 to 6 times their length before stretching.  The polymers are preferably melt spun at 190 to 250 DEG C. and, quenched in a bath at 30 to 100 DEG C. and then stretched.  The polymers may be pigmented and advantageously contain an antioxidant and/or an additive which reduces degradation of the polymer when heated.  A list of suitable antioxidants and heat stabilizers is given. Crystalline poly alpha-butene may be obtained by extraction of the crude polymer with n-hexane, the crystalline polymer being the residue from the extraction.  In an example, unbranched poly alpha-butene having a crystallinity of 79%, a molecular weight of 190,000 and an intrinsic viscosity of 3,1, to which has been added 0,5% of p-phenylene diamine as an antioxidant, is melt spun at 230 DEG C. through a multi-hole spinneret, the filaments passed through water at 60 DEG C. and stretched by means of a series of rolls to 600 times their original length.  The filaments of the invention have good tensile strength combined with chemical inertness, resistance to insects, moulds and bacteria and to both fresh and sea water. Specification 828,791 also is referred to.
Patent GB-209578-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B9/18
Filed: 1922-12-07
Abstract: 209,578. Wade, H., (Mercury Mills, Ltd.). Dec. 7, 1922. Circular machines.-A rotarv needle cylinder machine is provided with means for intermittently raising and lowering the high splicing finger 3 and with co-operating means, which cause the finger to be in operation for increasing periods in successive revolutions, so as to knit a high spliced area of tapering configuration. A rotating cam 14, having high and low cam portions 14<b>, 14<a> acts through intermediate levers &c. 5 - - 12 to throw the finger 3 into or out of feeding position. To the hub 19 of the cam 14 is secured a disc 21 with a recess, the shoulder 22 of which is circular and concentric with the hub. Arcuate segments 23, 23<a> the peripheries of which are flush with the high portion 14b of the cam 14 are moved towards each other until the length of the low portion 14<a> on which the roller 13 runs is reduced to zero and by subsequently gradually increasing their distance apart a high splice of inverted V configuration is produced. A pin 32, Fig. 4, screwed into the segment 23 extends through a pinion 31 journaled on the hub of a pinion 24 and meshing with a gear 29, Fig. 3. Another gear 26 connected by a friction clutch to the gear 29 meshes with the pinion 24. The dimensions of the gears are such that the segment 23 moves a short way relatively to the cam part 14<a> at each revolution of the shaft 15. The pin 32 also extends through jaws 36 on a slide 35 provided with other jaws 39 through which a pin 37 fixed to the segment 23<a> extends. As the pin 32 moves round it carries with it the slide 35 and causes the pin 37 and segment 23<a> to move in the opposite direction. The friction clutch consists of a ring 43 which is caused to expand and engage a flange 44 of the gear 29 by means of a cam 45 on a bell crank controlled by the pattern drum 17. The segments 23, 23a may also be moved apart against the action of a spring by a flexible member or a series of steel balls in a groove. The finger 3 is held out of feeding position by the action of the pattern mechanism during the knitting of the parts of the stocking which are not required to be spliced.
Patent GB-631327-A (GB)
Title: Process and apparatus for the manufacture of nitrogen trichloride
IPC: C25B1/26
Filed: 1946-11-12
Abstract: 631,327. Electrolytic production of nitrogen trichloride. KORENSCHOOF, N. V. DE. Nov. 12, 1946, No. 33545. Convention date, Feb. 28. [Class 41] A process of manufacturing substantially pure nitrogen trichloride by electrolysis of a solution containing NH4- and Cl-irons, the gaseous products being blown from the electrolyte by a current of gas, is characterized in that a diaphragm is employed separating the anode space from the cathode space, and means are provided whereby an amount of ammonia between two-thirds and the total amount of ammonia formed in the cell enters the anode space. A further feature of the invention relates to the manufacture of a mixture of nitrogen trichloride and chlorine in which case at least two negative electrodes are employed, one at least being separated from the others and from the positive electrode by the diaphragm, and the electricity through the negative electrodes is distributed so that less than two-thirds of the total ammonia formed in the cell enters the anode space. Diffusion of ammonia through the diaphragm from the cathode space may be prevented substantially by keeping the concentration of the ammonia in this space at a low level, this being done, for example by neutralizing the ammonia, by dispelling it by a gas current, or by replenishing preferably continuously, the electrolyte on the cathode space. In the arrangement shown, a positive electrode 4 in the form of a longitudinally-split cylinder, and a negative electrode 5 arranged on the gap in the electrode 4, are provided outside a diaphragm 3, and another negative electrode 6 is arranged within the diaphragm. Current is supplied to the negative electrodes through a variable resistance 7 which determines the proportions of ammonia formed within and without the diaphragm. Ammonium chloride crystals to replenish the cell are supplied through an opening 10 and sodium chloride solution is continuously supplied through a funnel 11, electrolyte being drawn off through a siphon 12. Specification 311,253, [Class 41], is referred to.
Patent GB-391392-A (GB)
Title: Improvements in and relating to valve circuits for radio transmission
IPC: H03F3/02
Filed: 1932-11-28
Abstract: 391,392. Valve amplifying circuits. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Nov. 28, 1932, No. 33642. Convention date, Dec. 10, 1931. [Class 40 (v).] The energy amplification of a screen-grid stage of a radio transmitter is increased by raising the screen-grid voltage so that the plate current reaches a saturation value with a control grid voltage that does not produce substantial grid current. The raising of the screen-grid voltage shifts the plate current-control grid voltage curve from the position 1 to the position 2, in which all the rising part of the curve lies on the negative side of the zero grid volts ordinate 0 B. The valve employed should be such that its amplification factor, measured with plate and screen-grid joined, is small. Secondary emission from the plate is reduced by using a third grid between it and the screengrid, or the plate may be formed of, or coated with, a material that is a poor emitter of electrons. The external screening of the valve stage should be adjacent to the internal screen formed by the screen-grid.
Patent GB-916189-A (GB)
Title: Improvements in or relating to the production of organoalkoxyboranes
IPC: C07F5/02
Filed: 1961-09-20
Abstract: Organoalkoxyboranes (esters of boronic and borinic acids) having the formula RxB(OR1)3-x are made by reacting a compound RM with a trialkyl borate ester B(OR1)3 and then reacting a mixture of the resultant reaction products with boron trichloride, wherein the radicals R, which may be the same or different, each represents an alkyl radical, an alkyl radical carrying at least one phenyl or alkyl-substituted-phenyl substituent, a phenyl radical or an alkyl-substituted-phenyl radical, M is a sodium, potassium or lithium atom or an MgCl or MgBr group, R1 is an alkyl radical and x is 1 or 2.  Preferably the compound RM is reacted with the borate ester at a temperature of from -40 DEG C. to -60 DEG C., the resultant reaction mass is allowed to warm to ambient temperature under constant agitation, the reaction mass is cooled to about -50 DEG C., the boron trichloride is added, the resultant mass is allowed to warm to ambient temperature while stirring, and the organoalkoxyborane is recovered by distillation.  In examples, (1) ethylmagnesium bromide is reacted with tri-n-butyl borate and boron trichloride to yield dibutoxyethylborane, butoxydiethyl borane and tri-n-butyl borate; (2) ethylsodium is reacted with trimethylborate and boron trichloride to yield dimethoxyethylborane, methoxydiethylborane and trimethyl borate; and (3) phenylsodium and triethyl borate are reacted with boron trichloride to yield diethoxyphenylborane, ethoxydiphenylborane and triethyl borate.
Patent GB-1148330-A (GB)
Title: Dispersion-hardened metal sheet material
IPC: C22C1/10
Filed: 1966-07-27
Abstract: 1,148,330. Powder metallurgy; dispersion hardened alloys. FANSTEEL METALLURGICAL CORP. July 27, 1966 [July 29, 1965], No.33716/66. Headings C7A and C7D. A dispersion hardened metal sheet comprising Ni, 10-30% by weight Cr and 0À1-6% by volume of a refractory metal oxide such as ThO 2  and Al 2 O 3  with an average particle size of less than 80 millimicrons is made by consolidating a powder mixture of the constituents such as by compacting and sintering below 2200F. followed by rolling predominantly in one direction at a temperature 1100-100F. below the recrystallization temperature to at least 50% reduction in thickness and then heating at a temperature to fully recrystallize the structure. The recrystallized sheet may be finally cold rolled up to 20% reduction in thickness. In the example NiCO 3  - Cr(OH) 3  - ThO 2  are coprecipitated, dried, mixed with carbon heated in H 2  at 400 C. and then at 925 C. in H 2  - CH 4  and finally heated in H 2  at 875 C. The powder is hydrostatically compacted, canned in mild steel, sintered in H 2  and cooled in argon. The sintered billet is hot extruded at 1750 F., hot-rolled at 1800 F. and finally rolled to size at 1300F. Recrystallization is carried out at 2200F. Alternatively the initial consolidation of the powder may be carried out by forging or extrusion.
Patent GB-1138237-A (GB)
Title: Guard junctions for p-n junction semiconductor devices
IPC: H01L21/00
Filed: 1966-07-27
Abstract: 1,138,237. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORP. 27 July, 1966 [30 July, 1965], No. 33791/66. Heading H1K. In a device comprising a zone of one conductivity type formed as an inclusion in one face of a semi-conductor body or layer of the opposite type with a further inclusion of the opposite type within said zone, the breakdown voltage of the junction between zone and body is increased by providing a guard ring zone forming a PN junction with the body within its depletion region. Typically the device is a planar diffused transistor (Fig. 4) with an annular emitter region and having two concentric guard ring zones associated with the collector junction. In an alternative arrangement a single guard ring disposed on the opposite face of the wafer is used (Fig. 6, not shown). In a controlled rectifier (Fig. 5) a guard ring 40 may be provided for the control junction and another 42 for one of the outer junctions or there may be two concentric guard rings for the central junction. Channelling between the protected junction and its guard ring may be reduced by disposing a suitably biased electrode on a passivating oxide layer overlying the intervening region. Reference has been directed by the Comptroller to Specifications 1,076,371, 1,078,273 and 1,078,547.