baber/WOPTO huggingface dataset:
Patent GB-1065277-A (GB)
Title: Automatic boot and shoe press or tree
IPC: A43D3/14
Filed: 1964-08-26
Abstract: 1,065,277. Boots &c. I. J. ALLSOP. Aug. 26, 1964 [July 15, 1964], No. 35063/64. Heading A3B. A shoe tree which will carry a pair of shoes comprises a frame 30 having for each shoe, a heel retainer 45 pivoted to its upper end and having a movable carriage 57 to which is pivotally connected a toe retainer 60. The carriage 57 has rollers (59) which move along channels in the frame 30 and is urged upwards (as shown in Fig. 2) by resilient bands (64) so that a shoe 49 is gripped between the heel and toe retainers 45, 60 and is held with the sole in a flat condition. In a modification the resilient bands may be replaced by springs.
Patent GB-1006216-A (GB)
Title: Information storage circuits
IPC: G11C11/12
Filed: 1961-09-29
Abstract: 1,006,216. Magnetic data storage apparatus. WESTERN ELECTRIC CO. Inc. Sep. 29, 1961, [Nov. 1, 1960], No. 35080/61. Heading H3B. An information storage circuit comprises a magnetic memory element capable of assuming a first and a second remanent magnetic state, a first conductor magnetically coupled to the element and a second conductor for varying the magnetic coupling between the first conductor and the memory element in accordance with input information. Strip 11 is inductively coupled to two wire memory elements and an electrically conductive high-permeability magnetic shunt 12, 13 is arranged parallel to each magnetic element, and between it and the strip 11. When a negative pulse 21, the amplitude of which is not critical, is applied to strip 11 the magnetic flux f<SP>1</SP> is shunted through shunt 12 and does not affect element 10 1 . If a current 22 is simultaneously applied to shunt 13, of sufficient magnitude to saturate it and so reduce its permeability, the magnetic flux f<SP>11</SP> preferentially passes through element 10 2  and switches it to the 1<SP>1</SP> remanent state. Read-out is achieved by applying a large positive pulse 23 to strip 11 sufficient to overcome the shunting effect and to switch any element in the " 1 " state back to " 0." This induces a current pulse in element 10 2 , available at 18. In a storage matrix the magnetic shunts are provided by further wire memory elements. In a modification (Fig. 3) the second conductor 52 is arranged between the two halves 51a 51b of a solenoid, while the memory element is outside the solenoid. In this arrangement when no pulse is applied to conductor 52 the element 50 is influenced by a large field, whereas when a pulse is applied thereto the field is reduced and switching does not take place. The wire memory elements may be embedded in non-conductive, non-magnetic tape. Specification 844,351 is referred to.
Patent GB-474414-A (GB)
Title: Process for the separation of ethylene from higher olefines
Filed: 1936-12-22
Abstract: Gas mixtures containing ethylene and higher olefines, such as coke oven gases and those obtained by cracking hydrocarbon oils and gases, are passed into a liquid body of benzene or derivative thereof in the presence of aluminium chloride or equivalent Friedel-Craft catalyst at a temperature not exceeding 50 DEG  C., whereby higher olefines are combined with the benzene compound to form liquid reaction products and so removed from the gas mixture. Benzene derivatives which may be used in the process include toluene, xylene, ethyl benzenes, ethoxybenzenes, chloro-benzenes, and bromo-benzenes, and if the derivative is not normally liquid it may be dissolved in an inert solvent.  Reaction is preferably effected in a closed vessel at a pressure of about 10--50 lb. per sq. in. above atmospheric pressure. Olefines higher than propylene may first be removed from the gas mixture as by chlorination or hydrolysis with sulphuric acid.  In one example, an oil gas is first chlorinated to remove butylenes and higher olefines, and then passed into benzene containing aluminium chloride at 15--20 DEG  C. under slight pressure.  Ethylene remains in the gas, and from the liquid reaction mixture, which eventually separates into two layers, monoisopropylbenzene is recovered by distillation of the upper layer, whilst the lower layer contains polyisopropylbenzenes.  In a second example, using trichlorobenzene in place of benzene and a temperature of 20--25 DEG  C., the liquid reaction mixture is washed with water and dilute sodium hydroxide, dried, and distilled, leaving a still residue comprising alkylated trichlorobenzenes.
Patent GB-1062022-A (GB)
Title: Improvements in cadmium sulphide
IPC: G03G5/08
Filed: 1963-09-06
Abstract: Photoconductive cadmium sulphide is made by firing a mixture of cadmium sulphide, zinc chloride and an activating containing halogen and an activity metal to its melting temperature removing water-soluble products from the resulting material by washing, and then refiring in the presence of a zinc halide.  In a typical case specified amounts of the above constituents with cupric chloride as activator are mixed with water and ammonium chloride and optionally a few drops of concentrated hydrochloric acid to form a slurry which is then dried by heating.  The resulting cake is broken up and placed in a quartz tube and fired at 600 DEG  C. for 20 minutes.  After washing in de-ionized water, drying, and sieving the product is moistened with an aqueous solution of zinc and ammonium chlorides, dried and sieved.  The powder is then fired in stagnant air as before, and the product powdered without grinding.
Patent GB-819539-A (GB)
Title: Improvements in planographic printing plates
IPC: B41N3/03
Filed: 1956-11-19
Abstract: 819,539. Printing surfaces. TIMEFAX CORPORATION. Nov. 19, 1956 [Nov. 28, 1955], No. 35305/56. Class 100(2) A planographic printing plate comprises a base 1 of cellulose material such as wet-strength paper, a lithographic coating 2 and an auxiliary coating 3 consisting of a tetra-organo derivative of titanic acid. The derivative is preferably a titanium ester, such as methyl, ethyl, propyl or isopropyl ester, which contains four or less carbon atoms. The auxiliary coating may be located between the base 1 and the lithographic coating 2 and may be used in the manufacture of electrically inscribable plates as well as direct image plates. In both cases the coating may be used as a corrective film to cover unwanted images. The auxiliary coating is formed by dissolving in an anhydrous solution an ortho-titanic acid ester in the range of concentration from 10 per cent to 100 per cent. The solution is applied to the plate, dried and is then reacted with water to form a polymeric water-sensitive reaction product.
Patent GB-311193-A (GB)
Title: Improvements in the separation of gaseous and liquid products
IPC: C10G1/06
Filed: 1927-12-31
Abstract: 311,193. Harrison, C. F. R., and Imperial Chemical Industries, Ltd. Dec. 31, 1927. Liquids and gases, separating.-Gases and vapours are separated from liquids contained in admixtures, which are the product of high pressure reactions such as destructive hydrogenations,. at the reaction pressure and at a temperature high enough to prevent condensation of the vapours. The gas after cooling and/or scrubbing to remove condensible vapours may be expanded in an engine, and the liquid after cooling may be utilized to drive a Pelton wheel. The liquid and gas from a converter 1 are separated in a separator 3 which may be of the kind described in Specification 310,985, the liquid passing to a discharge valve 5 through a heat-exchanger 4 and the gas to a heat-exchanger 7 in which benzine vapours are condensed and collected in a catch pot 8 from which gas issues through a valve 10 and benzine through a valve 9.
Patent GB-905074-A (GB)
Title: Improvements relating to the heat stabilization of polyvinylchloride
IPC: C08K5/00
Filed: 1960-10-17
Abstract: Plasticized polyvinyl chloride compositions containing in intimate admixture therewith means for stabilising said resinous material comprise, by weight of the resin, (1) 0,01 to 3% of either an alkali metal derivative of saccharin or a metal salt of formula RSO3M wherein M is sodium, potassium, lithium, calcium or zinc and R is alkyl, alkenyl, aryl, aralkyl, aralkenyl, alkaryl, cycloalkyl, alkoxy, aroxy, cycloalkoxy, alkaroxy, aralkoxy or alkenoxy; (2) 0,01 to 0,5% of calcium calculated as metal and included as a calcium salt of a C6-C30 carboxylic acid or calcium phenate; (3) 0,01 to 0,5% of zinc calculated as metal and included as a zinc salt of a C6-C30 carboxylic acid; and (4) 0,005 to 0,5% by weight of phosphorus calculated as element and included as a phosphite ester.  Where the polyvinyl chloride has been prepared by emulsion polymerization component (1) may be derived partly or wholly from emulsifier residues.  Many suitable compounds for use in the stabilizers of the invention are listed and examples describe compositions comprising polyvinyl chloride, di-(2-ethylhexyl) phthalate, epoxidized soya bean oil and optionally titanium dioxide and calcium carbonate stabilized with (3, 4, 6 and 7) calcium and zinc naphthenates and triphenyl phosphite, together with (9 and 11) sodium lauryl sulphate; (15 and 18) calcium and zinc octoates and triphenyl phosphite with (12) sodium lauryl sulphate; (13) calcium and zinc naphthenates, diphenyl monoisooctyl phosphite and sodium lauryl sulphate; (14) calcium butyl benzoate, zinc octoate, tri-(2-ethylhexyl) phosphite and potassium oleyl sulphonate; (16) calcium octoate, zinc naphthenate, tricresyl phosphite and sodium saccharin; and (17) calcium p-octylphenate, zinc octoate, triphenyl phosphite and sodium sulphopalmitate.  The compositions may also comprise vinyl chloride copolymers, e.g. copolymers of vinyl chloride with vinyl acetate and vinylidene chloride, fillers, extenders, pigments and auxiliary stabilizers and may be used in the formulation of plastisols.
Patent GB-819849-A (GB)
Title: Improvement in fluorination of trichloroethylene
IPC: C07C17/21
Filed: 1957-11-14
Abstract: 1,1,1-Trifluoro-2-halo-ethanes are prepared by passing a mixture of hydrogen fluoride and trichloroethylene or 1,1-dichloro-2-bromo ethylene into contact with a basic chromium fluoride catalyst for between 1 and 100 seconds and at a temperature of at least 150 DEG C. to convert at least part of the compound to the 1,1,1-trifluoro-2-halo-ethane.  The reaction preferably takes place at 300-400 DEG  C. for a time of 2 to 10 seconds and the 1,1,1-trifluoro-2-halo-ethane may be fractionated from the resulting mixture.  The catalyst is prepared by heating hydrated chromium fluoride in the presence of oxygen and is described and claimed in Specification 790,335.  The ratio of hydrogen fluoride to olefin is preferably 4 : 1 to 8 : 1.  In the examples: (1) trichloroethylene is passed with 8 mols. HF over a catalyst at 350 DEG  C. for a contact time of 2.9 seconds to give a mixture containing 1,1,1,2-tetrafluoroethane pentafluoroethane, 1,1,1-trifluoro - 2 - chloro - ethane 1 - fluoro - 1,2 - dichloroethylene and unreacted starting material; (2) using 1,1-dichloro-2-bromo ethylene under similar conditions pentafluoro-ethane, 1,1,1 - trifluoro - 2 - chloroethane and 1,1,1 - trifluoro-2-bromo ethane are obtained.
Patent GB-308709-A (GB)
Title: Improvements in or relating to shaving brushes
IPC: A46B15/00
Filed: 1928-12-03
Abstract: 308,709. Bernd, A. March 27, 1928, [Convention date]. No Patent granted (Sealing fee not paid). Massage.-In a shaving brush 1 combined with a massaging element 3, the bristles are wedged in place by a continuation of the massage element into the handle 5. In one modification, the massage element is mounted on a spindle which wedges the bristles in place, and in another modification the spindle is carried in a tube which is driven into the handle.
Patent GB-505827-A (GB)
Title: Device for the continuous dialysis in counter-current of liquids containing substances in a colloidal state
IPC: B01D25/12
Filed: 1938-12-07
Abstract: 505,827. Dialysing apparatus. KOOY, G. W. VAN B. Dec. 7, 1938, No. 35692. Convention date, Dec. 8, 1937. [Class 1 (i)] Dialysing apparatus comprises a number of frames provided with membranes arranged in a replaceable manner between a fixed head and one or more movable heads like a filter press, the spaces 5-9 bounded by the membranes being arranged in parallel, and being passed alternately and in counter-current by the liquid to be dialysed and the dialysing liquid. The outlets 3 and 4 for the respective liquids are arranged at the opposite end to the corresponding inlets 1 and 2, so that the total length of the path traversed by each liquid is always the same whichever the space through which the liquid passes. Preferably both inlets are arranged on the same side on the fixed head, and the outlets on the movable heads.
Patent GB-761080-A (GB)
Title: Improvements relating to microporous thermoplastic materials
Inventor: HONEY ERIC MAURICE O'CONOR
IPC: H01M50/414
Filed: 1953-12-23
Abstract: <PICT:0761080/IV(a)/1> <PICT:0761080/IV(a)/2> <PICT:0761080/IV(a)/3> Microporous thermoplastic sheet is rendered dimensionally stable at comparatively high temperatures, e.g. 90 DEG  C., by passing it through a hot zone at a temperature above the softening point and approaching the temperature of manufacture, whilst permitting shrinking or swelling in all directions, then rapidly cooling to below the softening point, e.g. by cold water or air at atmospheric temperature.  The temperature of the hot zone and time of treatment therein may be increased beyond that necessary to produce dimensional stability in order to modify the pore size of the microporous material.  The microporous material may be of polyvinyl chloride and may be produced as described in Specification 565,022, [Group IV]. Three methods of effecting the heating and cooling are illustrated in Figs. 1-3 respectively. As shown in Fig. 1, a roll 1 of microporous sheet material whose pores are waterfilled is cut into pieces about 3 ft. long and 1 ft. wide by knife 2 and forwarded by endless conveyer belt 4, of perforated stainless steel, past steam jets 6.  The pieces then pass under sponge rubber roller 8, cold water sprays 9 and are stacked at 10.  During one minute's exposure to steam, a 3 ft. long sheet of microporous polyvinyl chloride may lose about 1/2 in. in length and show slight gains in width and thickness.  The sheets are then dried, preferably at a temperature not exceeding 60 DEG  C., and are dimensionally stable up to 90 DEG  C.  In an alternative arrangement, Fig. 2, a continuous sheet is fed by driven rollers 13, 14 and passed along the surface of water heated to 95 DEG  C.  The speed of the driven take-off rollers 15 is adjusted so that the sheet is not under tension. The sheet is in contact with the hot bath for 1 minute and is then cooled by air at room temperature and passed through a drier 16 whose temperature does not exceed 60 DEG  C.  In a second alternative, Fig. 3, the stabilization treatment is carried out on a material already dried.  The continuous sheet 17 is passed through a drier 18 at 70 DEG  C. and chamber 19 with heaters 20 to maintain a temperature of 95 DEG  C.  The take-off mechanism 21 is adjusted to leave a loop 22 so that the material is in the heating chamber for 2 1/2 minutes.  The material is cooled by the atmosphere and reeled on drum 23.  As an example, microporous sheet 0.010 inch thick, of 5 parts polyvinyl chloride and 4 parts polypropylene sebacate was heated to 80 DEG  C. for 2 1/2 minutes in the chamber 19, Fig. 3.  The sheet may be reduced 20 per cent longitudinally, without alteration of pore size; by heating to 95 DEG  C. for 2 1/2 minutes the material shrinks 30 per cent in length, 10 per cent in width and the average pore size of 3 microns was reduced to 1 micron. Specifications 727,679 and 728,600 also are referred to.
Patent GB-1358755-A (GB)
Title: Flight parameter display instruments
IPC: B64D45/04
Filed: 1971-07-29
Abstract: 1358755 Flight parameter display instruments THOMSON-CSF 29 July 1971 [30 July 1970] 35828/71 Heading B7W A flight parameter display instrument for displaying simultaneously on a screen the instantaneous values of the longitudinal attitude angle 0 and the glide slope angle α of an aircraft on which the instrument is located, said parameters being displayed in the form of markers, wherein a first movable marker (b) is associated with a first graduated scale Eg movable to indicate glide slope angle α, a second stationary marker (a) centred in the screen is associated with a second graduated scale E 1  movable to indicate the attitude angle #, said scales E 1 , E 2  being parallel and having similar graduation, the zero graduation of the second scale E 1  being depressed in respect of the zero graduation of the first scale E 2  by a predetermined value equal to the mean incidence angle α 0  during the actual flight phase, the zero graduation of said first scale E 2  corresponding to the horizon level, and wherein servo means control the positioning of said scales synchronously in accordance with attitude angle value, and of said first marker in accordance with the difference of values between the instantaneous incidence angle α of the aircraft and said mean incidence angle α 0 , said first marker (b) being at the level of said second marker (a) when said difference is equal to zero. The screen may be the projection glass of a head-up display, said screen being pivotable through the angle α 0  and adjustable so that the distance of the centre of the screen from a collimating lens may be varied, with the scales and markers being in the form of reticles. An electromechanical control system, Figs. 8, 9, 10 (not shown) is described for controlling the movement of such reticles. Alternatively, a similar display may be shown on a c.r.t.
Patent GB-820649-A (GB)
Title: Improvements in or relating to refractory coatings for molybdenum and molybdenum-base alloys
Inventor: BIRD PHILLIP LORRAINE
IPC: C23C10/16
Filed: 1956-11-23
Abstract: A binary refractory coating consisting mainly of disilicides is formed on molybdenum and molybdenum-base alloys by first diffusing chromium into the surface thereof at a temperature of not more than 1300 DEG C. to produce a molybdenum-chromium alloy surface layer not more than 0.001 in. thick and containing not less than 40% chromium, and then diffusing silicon through the alloy layer and into the molybdenum at a temperature of not more than 1300 DEG C.  The chromizing and siliconizing may be performed by vapour-diffusion or vapour-pack-diffusion processes.  In the preferred sequence of operations the molybdenum is (1) degreased and washed in aqueous sodium hydroxide, (2) etched in nitric acid, (3) annealed at 1300 DEG C., raising the temperature over four hours and then cooling for two hours in hydrogen, (4) chromized by the iodide pack method, and (5) siliconized in a silicon tetrachloride/hydrogen gas mixture.
Patent GB-1384674-A (GB)
Title: Measuring system for roundness of workpiece
IPC: G01B7/28
Filed: 1973-07-30
Abstract: 1384674 Measuring roundness of workpiece TOYODA-KOKI KK 30 July 1973 36076/73 Heading G1N The diameter of a workpiece W, Fig.1, subjected to a grinding operation is measured continuously by two feelers 11, 12 associated with a differential transformer 13, whose output signal, after removing the carrier, comprises a D.C. voltage representing the instantaneous diameter and an A.C. voltage representing the deviation from roundness. The D.C. component is filtered out at 22 and the amplitude of the remaining A.C. component is compared at 23 with a preset value, whereby the machining is stopped when the roundness deviation is within pre-set limits. The D.C. instantaneous diameter signal is fed to trigger circuits 21 to control the rate of feed of the grinding wheel for rough grinding down to a first dimension and for fine grinding down to the desired diametral dimension, finishing with a spark erosion treatment to obtain the desired degree of roundness.
Patent GB-175495-A (GB)
Title: Improvements in or relating to cutting tools
IPC: B23K31/02
Filed: 1920-12-23
Abstract: 175,495. Hancock, T. R., and Hancock, L. J. Dec. 23, 1920. Addition to 172,857. Tools.-A modification of the means for securing a tip or edge of high-speed steel or like metal or alloy, such as that known under the registered Trade Mark " Stellite," to a tool body of inferior metal, described in the parent Specification, consists in casting the tip or edge on the prepared body in a mould made preferably of electrolytic graphite instead of welding it thereto.
Patent GB-410896-A (GB)
Title: Improvements in grate bars for domestic fireplaces
IPC: F24B1/193
Filed: 1932-12-21
Abstract: 410,896. Domestic grate fronts. SHAW, C. H., Southgate, Avenue Road, Wolverhampton. Dec. 21, 1932, No. 36170. [Class 126.] Front bars D for a well-type fire are supported solely by heavy members A which are of such weight and stability that, by merely resting on the hearth in front of the fire, they can safely retain piled up fuel in place. The members A are of L-shape with feet C stretching rearwardly from the fire and the bars D are preferably heavy and secured in recesses in the members A.
Patent GB-433414-A (GB)
Title: Process for the accelerated preliminary maturing of alkali-cellulose
IPC: C08B1/14
Filed: 1934-12-17
Abstract: The preliminary maturing of alkali cellulose is effected by subjecting the cellulose after alkalization and pressing to remove superfluous lye, first to a mixing and loosening process at an elevated temperature and then to a shredding at a temperature that is normal or gradually becomes normal.  In one example the process is carried out in two shredders A and B, Fig. 1, the first, A, for carrying out the loosening at elevated temperature, after which the cover 1 of the shredder is raised and the latter is tipped about the shaft 2, and the material is poured over an incline 3 into the open shredder B.  The incline 3 contains a hinged part 3<1> which can be swung away to allow tipping of the shredder B to empty the material over an incline 6 into a transport vessel 7.  In the shredder B the blade drum 4 is closer to the toothed portion 5 than in the shredder A.  The temperature of each shredder is controlled by a medium supplied to the hollow peripheral walls 8, 9, the supply and outlet conduits for the medium being if desired coaxial with the shaft 2 to facilitate tipping.  The first process is suitably carried out at 50 DEG  C. for 1 hour, and the whole process should be complete in about 4 hours. In Fig. 2 an apparatus is shown for carrying out the process in a single shredder C in which the blade shafts 10 are journalled in bearings 11 the distance apart of which can be adjusted horizontally by a screw spindle 12.  Through the cover 16 of the shredder extends the charging pipe of a parallelogram regulator 17 which is arranged for the translation of temperature variations into revolutions of the pinion 18 to which is fastened the end of a cord 19 extending over the guide roll 20 and drum 21 to the suspended weight 22.  The drum 21 is keyed on the shaft 12 so that temperature variations in the shredder C result in an automatic movement of the blades 13 relative to the toothed portion .14. The temperature in the shredder may be automatically controlled by means of an adjustable central contact switch 23 containing clockwork <PICT:0433414/IV/1> <PICT:0433414/IV/2> mechanism which moves the contact lever 24 uniformly in a circle to make a complete revolution in the time (e.g. four hours), of the process.  During its revolution the lever 24 moves over contact pieces 25, 26 to close circuits containing the battery 27 and either the coil 28 or 29 of an electromagnet.  These magnets control cocks 30, 31, the first of which is located in the conduit 32 of the heating liquid and the latter in the conduit 33 of the cooling water.  The process may be carried out in an ordinary shredding machine by running the blades in the reverse direction during the first part of the process, when the alkali cellulose is merely loosened at high temperature, and in the normal direction during the second part of the process.