baber/WOPTO huggingface dataset:
Patent GB-826421-A (GB)
Title: Position-indicating navigation systems
Inventor: FRENCH NORMAN EDWARD
IPC: G01C21/16
Filed: 1954-11-15
Abstract: 826,421. Electric measuring systems. SPERRY GYROSCOPE CO. Ltd. Oct. 21, 1955 [Nov. 15, 1954], No. 33073/54. Drawings to Specification. Class 40 (1). In an aircraft navigation computing device a spherical polar co-ordinate system is used in which the co-ordinates are displaced relatively to the normal latitude and longitude, that is, the pole of the system is an arbitrarily chosen point instead of the geographicaly North Pole. Consequently, as the craft approaches the North Pole, the formulae employed by the system do not become unmanageable, as is the case in the normal system. The craft acceleration is measured by accelerometers of the differential capacitor type along the horizontal coordinates of system and the distance travelled is obtained by a double integration. The height of the craft is measured barometrically. To allow for the effect of the Earth's rotation, modifying signals are applied to the accelerometers. The computed latitude and longitude of the craft are displayed separately on indicators which are positioned by motors, the shaft angular positions of which are determined by the signals applied to the motors from integrators the input to which is the output from the accelerators. Signals corresponding to the speed of rotation of the earth and to the angular displacement of the co-ordinate system are fed into the device and outputs are also derived which provide the modifying signals applied to the accelerometers. Following the double integration of the accelerator output by the integrator and motor, the subsequent computation of the accelerometer modifying signals, which take the form of a sine, cosine function of the computed latitude and longitude and the angle between the normal and displaced co-ordinates, is effected by potentiometers positioned by the motors. Specifications 666,882, 718,171, [Group XXXV], 804,849, 826,417 and 826,418, [Group XXXV], are referred to.
Patent GB-1279801-A (GB)
Title: Oven temperature control
Inventor: FISHER JOHN ARTHUR
IPC: G05D23/22
Filed: 1968-07-11
Abstract: 1279801 Automatic control of temperature BAKER PERKINS Ltd 26 June 1969 [11 July 1968] 33078/68 Heading G3R The temperature system of a baking oven wherein bread to be baked is continuously conveyed through the oven chamber on a support 6 Fig. 2 between radiant heating means 5, is automatically controlled by an arrangement including a thermocouple probe A having a blackened heat absorptive plate 1 facing the radiant heating means 5 and a heat reflective plate 3 of polished aluminium facing the bread on the conveyer support 6. The output of the thermocouple is fed to a control unit (not described) where it is compared with a pre-set desired temperature value and the control unit controls the heat input to the oven chamber accordingly. A second thermocouple probe B operates as a detector of the presence or absence of bread in the oven and to reduce the time lag in restoring the oven temperature to the set value when there is a break in production. The probe B has a blackened heat absorptive plate facing the bread conveyor and a heat reflective plate facing the heating means 5. A certain fraction of the output of B (predetermined for a given oven) is applied by means of a potentiometer 7, in opposition to the output voltage of A and in effect modifies the pre-set value so that when there is a production break the oven temperature will rise and then stabilize above the set values, the difference between the outputs of the two probes being maintained substantially constant by a control unit (not shown). Thus when production is resumed, the oven temperature will fall as heat is imparted to the incoming bread and will then rapidly stabilize at the set value. The probe is detailed in Fig. 1 wherein a thermocouple junction 2 is attached to the rear of the copper plate 1 the front surface of which is painted with matt black. Heat insulating material 4 separates plate 1 from the heat reflective polished aluminium plate 3. In a modification the two probes may be replaced by one probe in which a blackened absorption plate is substituted for the plate 3. A plurality of such control systems may be employed each controlling a respective heating zone.
Patent GB-452141-A (GB)
Title: Improvements in or relating to the laying of submarine electric cables
IPC: E02F5/10
Filed: 1934-11-16
Abstract: 452,141. Laying submarine cables. BRITISH WESTERN UNION, Ltd., 22, Great Winchester Street, London.-(Western Union Telegraph Co. ; 60, Hudson Street, New York, U.S.A.) Nov. 16, 1934, No. 33080. [Class 36] [See also Group I] A method of laying a submarine cable in water of considerable depth comprises cutting a trench in the bed of the body of water in which the cable is to lie, simultaneously paying out the cable towards the trench as the latter is cut, and leading it through the trench cutting device into the trench at a position immediately to the rear of the trench cutting device. The trench-cutting device, which is preferably towed by the ship from which the cable is payed out, may comprise a plate 15, Figs. 2, 4 and 7, supported on runners 37 and which carries a plough 16 adapted to cut the trench and having two side plates 16a between which the cable passes as it is laid in the trench. A double ploughshare 18 is mounted on the front end of the plough and is connected to the plate 15 by a central web 19 adapted for connection. to the towline. The runners 37 extend in front of the plough in order to lift the latter over obstacles on the ocean bed. The plate 15 is strengthened by a superstructure consisting of longitudinal members 25, 44 connected together by transverse members 26-28, the longitudinal members 25 extending outwardly to prevent capsizing of the device when it is tilted by obstructions on the ocean bed. The rear end of the plough is provided with fins 31 which ensure that this end digs fully into the trench. As shown in Fig. 7, the cable C being laid passes through a guide 42 mounted on the front of the plate 15, over a guide 46 which leads into the space between the side plates 16a of the plough, and under a guide 47 which is arranged between the rear ends of the side plates and which lays the cable in the bottom of the trench. In a modified construction, the transverse members of the superstructure of the device are in the form of hoops, so that the device will right itself if capsized. The hoops may support a wire mesh screen which encloses the front part of the device.
Patent GB-992510-A (GB)
Title: Removal of impurities and recovery of potassium hydroxide in the production of potassium permanganate
IPC: C01G45/12
Filed: 1962-08-30
Abstract: Impurities are removed and potassium hydroxide is recovered in the production of potassium permanganate, especially in a two-stage oxidation process of manganese oxide ore wherein crude potassium manganate from the first stage is dissolved in aqueous potassium hydroxide and electrolytically oxidized to permanganate in the second stage, which is then crystallized and separated from the mother liquor, which liquor consists essentially of an aqueous solution of potassium hydroxide, potassium manganate, and at least one "alkali-soluble impurity," e.g. potassium carbonate and other potassium salts soluble in up to 20% by weight KOH solutions, by reacting said liquor with calcium hydroxide at 50 DEG  to 95 DEG  C., whereby the "alkali-soluble impurity" e.g. potassium carbonate is converted to potassium hydroxide, which may for preference be employed for leaching first-stage potassium manganate.  The invention is described with reference to a flow sheet and refers to Specifications 842,745, 860,548, 864,549, 860,550, U.S.A. Specifications 2,940,821, and 2,843,537 for details of oxidation processes employed in the integrated process.ALSO:Impurities are removed and potassium hydroxide is recovered in the production of potassium permanganate, especially in a two-stage oxidation process of manganese oxide ore wherein crude potassium manganate from the first stage is dissolved in aqueous potassium hydroxide and electrolytically oxidized to permanganate in the second stage, which is then crystallized and separated from the mother liquor, which liquor consists essentially of an aqueous solution of potassium hydroxide, potassium manganate, and at least one "alkali soluble impurity" e.g. potassium carbonate and other potassium salts soluble in up to 20% by weight KOH solutions, by reacting said liquor with calcium hydroxide at 50-95  DEG C. whereby the "alkali soluble impurity" e.g. potassium carbonate is converted to potassium hydroxide, which may for preference be employed for leaching first stage potassium manganate.  The invention is described with reference to a flow sheet and refers to Specifications 842,745, 860,548, 860,550, 864,549 and U.S.A. Specifications 2,940,821 and 2,843,537 for details of oxidation processes employed in the integrated process.
Patent GB-914966-A (GB)
Title: Improvements in and relating to electromagnetic relays
Inventor: SOLOMIDES LOUIS ZENON
IPC: H01H47/22
Filed: 1959-10-01
Abstract: 914,966. Electromagnetic relays. LONDEX Ltd. Aug. 19, 1960 [Oct. 1, 1959], No. 33304/59. Class 38 (5). A relay having two armatures, one biased more strongly than the other, has its coil RCL in series with a capacitor C which is shunted by a circuit including a resistor R and a set of contacts B which are opened when the more strongly biased of the two armatures (not shown) is attracted. The coil RCL and discharged capacitor C are connected to a D.C. source T1, T2 when contacts S1 of a fault device (not shown) are closed and both armatures are attracted to operate respective contact sets (not shown) and open the contacts B. As the charging current falls the strongly biased armature resets to close the contacts B and maintain a reduced current through the coil RCL and the resistance R so as to retain the second armature in the operated position. When the contacts S1 are reopened the second armature resets and the capacitor C discharges through the resistance R and contacts B.
Patent GB-1157615-A (GB)
Title: Polymer Dispersions.
Inventor: OSMOND DESMOND WILFRID JOHN
IPC: C08F2/08
Filed: 1965-08-04
Abstract: 1,157,615. Polymer dispersions. IMPERIAL CHEMICAL INDUSTRIES Ltd. 22 July, 1966 [4 Aug., 1965], No. 33357/65. Headings C3G and C3P. A dispersion of polymer particles in an organic liquid in which the polymer has a swelling factor of from 20 to 50% is prepared by dispersion polymerization of a monomer in the organic liquid in the presence of disperse seed particles of another polymer having a swelling factor in the organic liquid of less than 15%, the swelling factor of the polymers being the percentage increase in weight of the respective polymers when: (i) the polymer is immersed in a mixture (10:1 by weight) of the organic liquid with the monomer from which the disperse polymer is to be derived; (ii) the mixture of liquid and monomer is at the temperature at which the dispersion polymerization is carried out; and (iii) the percentage increase in weight of the polymer is determined when equilibrium with the mixture has been reached. The dispersion polymerization is carried out in the presence of a stabilizer. Ethyl acrylate and methacrylic acid are copolymerized in Example 1 in the presence of a dispersion of seed particles of methyl methacrylate-methacrylic acid copolymer containing a lauryl methacrylatemethyl methacrylate graft polymer as stabilizer. In Example 2, vinyl acetate and methacrylic acid are oopolymerized in a dispersion of methyl methacrylate-methacrylic acid copolymer seed particles prepared in the presence of terminally unsaturated polylauryl methacrylate as stabilizer precursor. Vinyl acetate is polymerized in Example 3 in a dispersion of vinyl acetateacrylic acid copolymer seed particles containing, as stabilizer, a methyl methacrylate-methacrylic acid copolymer esterified with 12-OH-stearic acid self-ester.
Patent GB-397727-A (GB)
Title: Process for treating coffee beans
IPC: A23F5/04
Filed: 1932-11-25
Abstract: Coffee beans are subjected to a preliminary roasting, a steam treatment, with or without application of chemical reagents, and a final roasting.  Alternatively the beans may be roasted, steam distilled, and finally roasted.  The preliminary roasting is carried far enough to expel all natural water from the beans, the colour of the beans at this stage being of minor importance as the colour is restored at the final roasting.
Patent GB-191928-A (GB)
Title: A new or improved device for use upon cattle to prevent or restrain them from aggressive attack
IPC: A01K15/00
Filed: 1921-12-13
Abstract: 191,928. White, E. Dec. 13, 1921. Bridles; pads; materials.-A device for attaching to the heads of dangerous cattle or other animals to prevent forward and sideways, but not downward, vision comprises a plate 1, of aluminium or other material, having side-plates 2. The plate 1 is attached to the animals forehead by straps 5 passing round its horns, and an adjustable nose-band 11. The straps 5 are connected by straps 7, 13 to one another and to a neck-strap 12, which is connected in turn to the nose-band 5 by a link 14. The device is strengthened by ribs 15 and angle-plates 17. The straps 5, 11 support pads 20, 21, which consist of leather base-portions and leather-covered raised portions. In a modification for use on hornless animals, the neck-strap 12 is attached directly to the straps 5 and the side-plates 2, which are extended rearwardly.
Patent GB-395384-A (GB)
Title: Cold asphalt or bitumen dispersions, more particularly for street constructional purposes, and a process for the manufacture thereof
IPC: C08L95/00
Filed: 1931-12-03
Abstract: Asphalt, pitch, or tar is dispersed in water with the aid as dispersing agent, added to either phase of the dispersion, of oil shale or brown coal rich in bitumen, preferably in finely-divided state and pretreated or not by heating with alkali or petroluem or tar distillates.  Soaps, albumins or alcohols may be added as stabilizers.  On precipitation, for example when employed on roads, the dispersing agent and the principal ingredient mix intimately to form a durable surface.  Examples: (1) 10 parts of central German brown coal are finely ground, preferably heated with 0,3 parts of caustic soda, and mixed with 40 parts of molten asphalt, 10 parts of tar oil, and 40 parts of water; (2) 15 parts of oil shale are finely ground, heated with 45 parts of water with or without 0,25--0,5 parts of caustic soda, and stirred with 45 parts of Panuco asphalt; (3) 10 parts of central German brown coal are pulverized, heated to 180 DEG C. with 10 parts of asphalt and 10 parts of tar oil, melting with 30 parts of asphalt, and stirred with 50 parts of hot water; (4) 10 parts of pulverized oil shale are heated to 300 DEG  C. with an asphalt free from volatile ingredients and preferably further treated with fluxing oil before treatment as in (3).  Reference has been directed by the Comptroller to Specification 362,467.ALSO:Oil shale or brown coal rich in bitumen, pretreated or not by heating with alkali or petroleum or tar distillates, is employed to emulsify asphalt, pitch or tar, and, after precipitation, for example when employed on roads, mixes intimately therewith to form a durable surface.  Examples refer to the following compositions: (1) 10 parts of central German brown coal, preferably heated with 0,3 parts of caustic soda, 40 parts of molten asphalt, 10 parts of tar oil, 40 parts of water; (2) 15 parts of pulverulent oil shale, 45 parts of water, preferably containing 0,25-0,5 parts of caustic soda, 45 parts of Panneo asphalt; (3) 10 parts of central German brown coal, 40 parts of asphalt, 10 parts of tar oil, 50 parts of water.  Reference has been directed by the Comptroller to Specification 362,467.
Patent GB-634786-A (GB)
Title: Improvements in or relating to wheel structures and wheel cover structures
IPC: B60B7/04
Filed: 1946-11-12
Abstract: 634,786. Vehicle wheels. LYON, G. A. Nov. 12, 1946, No. 33574. [Class 144 (i)] A fairing-device, formed of thin metal, plastic or like resilient material, comprises a disc portion (constituting a trim-ring) extending from the edge of the tyre-retaining flange of the wheel-rim into grooved seatings on the wheelbody, or on a separately-formed attaching ring, in which the trim-ring is secured by means of a hub-cap snapped over bosses projecting axially and'radially from the wheel-body or the separate attaching-ring. In the form shown in Fig. 2, the trim-ring 31 has a curled edge 32 engaging over the edge of the rim-flange and a flanged inner edge to hug the groove 19 behind the spaced bosses 17 projecting from the wheelbody 7. The hub-cap 16 is formed with a beaded-edge 18 adapted to be sprung over the peaks 26 of the bosses 17 to clamp the inner edge of the trim-ring against the wheel-body. Fig. 9 shows a modification in which the trimring 127 is clamped, by the hub-cab 110, against a resilient ring 129 having teeth 145 pressed into biting engagement with the coned inner surface of the rim-part 120.
Patent GB-923270-A (GB)
Title: A slidable roof assembly on a vehicle
IPC: B60J7/057
Filed: 1961-09-19
Abstract: 923,270. Toothed gearing. WEBASTO-WERK G.m.b.H. Sept. 19, 1961 [Oct. 28, 1960], No. 33579/61. Class 80 (1). [Also in Group XXXII] Toothed gearing for sliding a roof panel 3 in a vehicle roof (see also Group XXXII), comprises a rack 9, Figs. 1 and 2, or a rack 28, Fig. 5, formed by a screw-threaded cable guided in a tube 8 or 29 telescopically mounted within a tube 11 or 23, which outer tube is connected to the sliding panel by a pin-and-slot connection 19, 20. The rack is firmly connected at 10 or 31 to the outer tube and is moved either manually by a handle 7 or by an electric motor.
Patent GB-484507-A (GB)
Title: Improvements in and relating to clockwork operated toys
IPC: A63H13/04
Filed: 1936-12-07
Abstract: 484,507. Toys. GRAHAM, E. M., and GRAHAM, R. L., (trading as GRAHAM BROS.). Dec. 7, 1936, No. 33589. [Class 132 (iii)] The human or other figure 1 incorporates a clockwork motor 2 rotating an unbalanced weight 4 for imparting walking, dancing or similar movements to the figure and rotating an irregular cam 15 rotating and sliding a cranked shaft 8 carrying the arm 10 to which is pivoted at 12 the bow 13 moving over the strings of the violin 6 carried by the arm 5 fixed to the figure 1.
Patent GB-971996-A (GB)
Title: Improvements in or relating to the oxychlorination of olefines
Inventor: MILLIDGE ALFRED FRANK
IPC: B01J23/78
Filed: 1962-09-01
Abstract: Chlorinated hydrocarbons are obtained by contacting a feed containing an olefine, hydrogen chloride and molecular oxygen in the vapour phase at elevated temperature with a catalyst comprising copper deposited on activated alumina, the latter having been heated prior to deposition of the copper to 800 DEG -1400 DEG C. for at least 2 hours as claimed in the parent Specification the catalyst also containing an alkaline earth metal (including magnesium) salt or hydroxide; it may also contain at least one salt of iron or a rare earth metal (defined as a metal of atomic number 57-71 inclusive). An example reacts ethylene, HCl and air in the presence of alumina containing Cu, Ce and Mg. Propylene is also specified as a suitable olefine.ALSO:A catalyst suitable for oxychlorination reaction (see Division C2) comprises copper deposited on alumina, the latter having been heated to 800-1400  DEG C. for at least 2 hours (cf. the parent Specification), the catalyst also containing an alkaline earth metal (including magnesium) salt or hydroxide; it may also contain at least one salt of iron or a rare earth metal (defined as a metal of atomic number 57-71 inclusive).  Specified alkaline earth metal, iron and rare earth metal salts are the chlorides, nitrates, formates, oxalates and acetates.  The alumina, after the heat treatment, may be impregnated with a solution of copper chloride and then dried, or impregnated with a solution of a copper salt such as the nitrate or formate and the salt converted to oxide by heating or by hydrolysing and drying.  Incorporation of the alkaline earth metal salt or hydroxide into the catalyst can be carried out before or after the heat treatment and before, after or simultaneously with the deposition of copper.  The iron or rare earth metal salt can be incorporated before, after or with the alkaline earth metal salt or hydroxide.  In an example the alumina contains Cu, Ce and Mg.
Patent GB-211619-A (GB)
Title: An improved mat for use on the teeing grounds of golf courses
IPC: A63B57/00
Filed: 1922-12-11
Abstract: 211,619. Whitaker, T. Dec. 11, 1922. Mats.-A rubber golf mat a, suitable for both right and left handed players, is formed with a non-slipping surface g leaving a plain stretch at each end upon which tees b are pivoted or fixed. The tees may be attached to or formed integral with the mat, or may be provided at each end of arms c pivoted to the mat.
Patent GB-1155589-A (GB)
Title: Improved process for the production of Terephthalic Acid
IPC: C07C51/42
Filed: 1966-07-27
Abstract: 1,155,589. Terephthalic acid purification. CHEMISCHE WERKE WITTEN G.m.b.H. 27 July, 1966 [28 July, 1965 (2)], No. 33736/66. Heading C2C. In a process for the purification and recovery of free terephthalic acid produced in the oxidation of a mixture of p-xylene and a lower alkyl (C 1 -C 4 ) ester of p-toluic acid with oxygen or an oxygen containing gas in the presence of an oxidation catalyst at an elevated temperature, the oxidized reaction mixture comprising ptoluic acid, a mono lower alkyl ester of terephthalic acid and free terephthalic acid is subjected to a thermal after-treatment in the liquid phase after the oxidation is terminated and free terephthalic acid is recovered. Recovery of terephthalic acid is facilitated by the presence of p-xylene, water and or a lower carboxylic acid in the reaction mixture. Examples are furnished.
Patent GB-338710-A (GB)
Title: Improvement in or connected with electric plug bases, switch plug bases and the like
IPC: H01R13/44
Filed: 1929-11-06
Abstract: 338,710. Marr, G. Nov. 6, 1929. Plug couplings. - At the outer end of the hole A receiving the metal contact socket B of a plug or like base C an insulated sleeve E is inserted to prevent accidental contact. The sleeve may be screwed as shown, and may project, with rounded edges, from the surface of the base.
Patent GB-633681-A (GB)
Title: Process for synthesising vinyl esters of carboxylic acids
Filed: 1947-12-22
Abstract: The preparation of zinc and cadmium silicates or polysilicates for use as catalysts in the preparation of vinyl esters from acetylene and the corresponding carboxylic acid (see Group IV (b)) is described.  Thus, zinc silicates are prepared by treating solutions of 36 DEG  Be commercial sodium silicate with a solution of a zinc salt, such as the chloride, the character of the gelatinous silicates so obtained varying with the concentration of the reactants.  For use as catalysts the silicates are washed, dried, crushed, pelleted or tableted and redried at about 140 DEG  C.  If an excess of sodium silicate is reacted with acidified aqueous zinc chloride a catalyst may be obtained in the form of an active silica gel with a zinc silicate base.ALSO:Vinyl esters of carboxylic acids are obtained by passing a gaseous mixture of acetylene and a carboxylic acid at elevated temperatures over a catalyst consisting of a silicate or polysilicate of zinc or cadmium.  The catalysts may be used disseminated in silica gel and for the preparation of the catalysts (see Group III].  Temperatures of 175 DEG  to 250 DEG  C. are instanced for the production of vinyl acetate.  In examples, an excess of acetylene is reacted with (1) acetic acid at about 170 DEG C. and (2) butyric acid at about 220 DEG  C. in the presence of a zinc silicate catalyst to give the corresponding vinyl ester.