baber/WOPTO huggingface dataset:
Patent GB-783704-A (GB)
Title: Process for the production of n-aminoalkyl-sulphonic acids
IPC: C07C309/14
Filed: 1954-07-21
Abstract: Halogenated alkylamine hydrohalides having an average of 0.25-1 atom of halogen per mol. (obtained by direct halogenation of an n-alkylamine hydrohalide) are reacted with aqueous sodium sulphite at elevated temperature to produce aminoalkylsulphonic acids.  The reaction may be carried out under reflux or in a sealed vessel.  The water is then removed by evaporation, concentrated hydrochloride added to precipitate sodium chloride which is filtered off, the filtrate concentrated by evaporation and the aminosulphonic acid precipitated with alcohol.  Examples are given of the chlorination of n-butylamine hydrochloride to introduce 0.95 atom of chlorine per mol. and reaction with sodium sulphite to give a product consisting of 1-aminobutane-3-sulphonic acid with some 4-aminobutane-1-sulphonic acid.  Preferably at least 0.5 atom of halogen is introduced into the molecule of alkylamine.
Patent GB-716972-A (GB)
Title: Improvements in or relating to the cooling of gas or other elastic fluid turbine blades
Inventor: FOWLER HOWARD STANLEY
IPC: F01D5/18
Filed: 1951-09-11
Abstract: 716,972. Gas turbine blades. PARSONS & MARINE ENGINEERING TURBINE RESEARCH & DEVELOPMENT ASSOCIATION. Aug. 26, 1952 [Sept. 11, 1951], No. 21383/51. Class 110(3) In a hollow turbine rotor blade b having one or more totally enclosed cavities c in which movement of cooling fluid can take place both inwards and outwards, one of said cavities is furnished with a baffle or division member a fixed therein to provide a circulation path forming a closed ring within the blade cavity, the major axis of which baffle is in the same direction as that of the coolant passage or is somewhat inclined thereto in order to take advantage of any particular relation between the centrifugal and Coriolis forces acting on the fluid or to bias the coolant flow to increase its cooling effect on any desired part of the blade. The baffle may be a tube, having if desired, a flared end d. Alternatively, the baffle may constitute a partition plate which is connected to the internal wall of the blade by members having a high thermal conductance. Again, the baffle may be supported in such a way as to insulate it thermally from the internal walls of the blade.
Patent GB-993050-A (GB)
Title: Improvements in or relating to apparatus for investigating electrical thickness
Inventor: WHISTLECROFT DONALD
IPC: G01R27/02
Filed: 1961-06-14
Abstract: 993, 050. Determining physical qualities. BRISTOL AIRCRAFT Ltd. June 14, 1962 [June 14, 1961], No. 21510/61. Headings G1N and G1U. In an arrangement for investigating the electrical thickness of a material, which is stated to be directly proportional to the product of the physical thickness of the material and the square root of its dielectric constant, energy is supplied from a microwave power source 2, Fig. 1, to one detector arm E of a hybrid waveguide junction arranged in a configuration known as a magic T and having an open ended waveguide 2 across the end of which the sample, backed by a reflector, is located coupled to one side arm; a waveguide 1 coupled to the other side arm including an adjustable attenuator along its length and being terminated by a movable short circuit; a further waveguide H terminated by a matched load 11 coupled to the other detector arm of the junction; and detecting means comprising directional couplers 4, 10, matching sections 12, 13, and crystal detectors 14, 15, for determining the sense of the phase difference between components of the electromagnetic signals reflected back along the side arms of the magic T and coupled to the respective detector arms. The arrangement may be applied to the inspections of radomes, the adjustable attenuator being preset to an average value determined from a number of test sections so that the difference in crystal outputs is an indication of the sense of deviation. To make a measurement of electrical thickness, the attenuator is first set to give balanced detector outputs with a standard piece of material. The sample being tested is substituted for the standard and the position of the short circuit, which may be calibrated to give a direct indication, is adjusted to restore balance. A servomotor system for controlling the movable short circuit whilst continually monitoring the surface of a material is described with reference to Fig. 4 (not shown), and in this system a potentiometer driven with the short-circuit produces an output proportional to the electrical thickness. Automatic control of a machining process in response to the measurement which forms the subject-matter of Specification 993,049 is referred to.
Patent GB-844931-A (GB)
Title: Improvements in or relating to a method of washing, rinsing and centrifuging laundry
IPC: D06F23/02
Filed: 1956-07-12
Abstract: 844,931. Washing machines. ROTHENBERGER, J. July 12, 1956 [July 13, 1955], No. 21637/56. Drawings to Specification. Class 138 (2). A method of washing, rinsing and spindrying in a double-drum washing machine controlled by an automatic timer comprises the following steps: (i) a rinsing water valve is opened until the machine has been filled to the level of an overflow; (ii) a washing water valve is opened during agitation of articles in the rotary perforated inner drum, whereby dirty liquid is removed through the overflow; (iii) the washing water valve is closed and the rinsing valve re-opened to rinse the articles in a continuous flow; (iv) the speed of the drum is increased to spin dry the articles. The washing liquid is heated in the machine to a temperature determined by a thermostat.
Patent GB-441259-A (GB)
Title: Improvements in and relating to indicating devices for radio apparatus
IPC: H03J1/04
Filed: 1935-07-30
Abstract: 441,259. Adjusting wireless apparatus. HUBNER, F., 21, Lerchenfelderstrasse, and MINERVA-RADIO W. WOHLEBER & CO., 11, Ziglerstrasse, both in Vienna. July 30, 1935, No. 21642. [Class 37] In a station name indicator for radio apparatus, of the kind in which a slide 5 actuated by the tuning member is provided with apertures 4a ... 4c adapted to register with signal openings 2a ... 2c in a plate 1 associated with the names of broadcasting stations and allow the opening corresponding to any particular station to be illuminated when the station has been tuned in, each aperture in the slide is associated with a plurality of signal openings in the plate. The openings in the slide may be combined into a slot, and in the form shown the illuminating lamp 6 is carried by the slide. The lamp may be so controlled by the rectified current of a high-frequency rectifier that light signals are only produced when the stations are audible.
Patent GB-382660-A (GB)
Title: Improvements relating to incandescent gas fires
IPC: F24C3/08
Filed: 1931-07-30
Abstract: 382,660. Gas fires. RADIATION, Ltd., Thimble Mill Lane, Aston, Birming- ham, and YATES, H. J., 15, Grosvenor Place, London. July 30, 1931, No. 21758. [Class 126.] In a luminous flame incandescent gas fire in which the flames are normally covered, an indicator burner c is placed in an accessible position between the gas regulator a and the main burners b to serve as an indicator by which regulation can be effected. The burner c may be covered by a cap d when not in use.
Patent GB-460635-A (GB)
Title: Improvements in spargers or sprinklers
IPC: B05B3/06
Filed: 1935-08-01
Abstract: 460,635. Rotary liquid-distributers. MORTON & CO., Ltd., R., and RAWLINS, G. A. Aug. 1, 1935, No. 21804. [Class 69 (iii)] [Also in Group XXXIV] A brewer's sparger of the kind comprising a hollow body 17 carrying spray arms 35 is supported from a fixed supply pipe 10 by ball bearings disposed within a housing for retaining lubricant provided on the fixed support. The body 17 carries an upstanding flange 22 to which is bolted a collar 23 forming with the collar 14 on the pipe 10 the housing for the ball bearings. The races 28, 29, which may be formed of non-corrosive metal such as stainless steel, are of equal diameter and are self aligning. Lubricant may be inserted through the opening 33. Openings 34 in the flange 22 prevent any liquid leaking past the gland 20 from entering the bearings.
Patent GB-190113-A (GB)
Title: Improved means for obtaining a graphic record of electric currents
IPC: G01R11/00
Filed: 1922-08-10
Abstract: 190,113. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Blakeney, E.). Dec. 6, 1921, [Convention date]. Pens for recording-instruments. In apparatus for recording electric currents particularly applicable to highspeed radio signalling, the marking-device is constituted by an ink reservoir having a vertical slot in which moves an horizontal capillary tube pen arm actuated by a forked arm associated with the moving coil of the instrument, the ink being held in the reservoir by its surface tension. Means are also provided for damping the movements of the arm. As shown in Figs. 1 and 2, the ring-shaped movable coil 8 which receives the varying current is at tached to an aluminium spider 9 and is in electric contact with leads 10, 11 and terminals 12 - - 15; the coil is also suspended by waxed silk threads 16 - - 19, attached to screws 20, 21 for adjusting the tension of the threads and the height of the coil respectively, and surrounds a core 5 disposed within an exciting winding 6 connected to a source of direct current and a controlling rheostat (not shown). The spider 9 carries a vertical aluminium rod 22 having a pin 23 connected to a forked arm 24 which moves the capillary marking-element 35. The arm 24 is made of aluminium and is clamped in a support 28 by means of a flat spring 26, adjustment of the support being effected by a thumb screw 30. The support 28 is carried on a pin 32 to permit of its removal for repairs or adjustment. The marker 35, which engages the forked end of the arm 24, is a fine tube of glass, silver, or brass which at one end presses lightly against the record strip, and at the other end moves in a slot 36 in an ink reservoir 37 connected by a flexible tube 39 to a supply reservoir 40 adjustable as to height to regulate the surface tension. The movements of the pen arm 24 are damped by an arm 44 having a slot in which the pen arm moves and which is controlled by a spring 49, Fig. 5, arranged between the arm and an adjustable pressure member 50.
Patent GB-460876-A (GB)
Title: Improvements in or relating to sparking plugs
IPC: H01T13/38
Filed: 1936-08-07
Abstract: 460,876. Sparking - plugs. SIEMENS & HALSKE AKT.-GES. Aug. 7, 1936, No. 21830. Convention date, Aug. 29, 1935. [Class 7 (iv)] The insulation consists of a highly sintered metallic oxide, the insulated terminal of tungsten, and the terminal attached to the plug body of a flexible difficultly-fusible alloy of, for example tungsten and molybdenum.
Patent GB-218653-A (GB)
Abstract: 218,653. British Thomson-Houston Co., Ltd., (Assignees of Crocker, C. T.). July 3, 1923, [Convention date]. Switches, actuating; pneumatic actuation; retarding and time limit devices; switches, latching and unlatching. - Where a number of switches are controlled in sequence the speed of the switchoperating member is itself controlled by a timing device consisting of a cylinder of irregular bore surrounding a switch operating rod so that it moves rapidly during, and slowly between switching operations. A reciprocating rod 3, Fig. 1, is moved in opposite directions by pneumatically-operated pistons 2 in cylinders 4 and carries racks engaging with gear wheels 1 secured on shafts bearing cams which control a number of switches as shown in Fig. 4. Mounted on the rod 3 is a central piston 7 which reciprocates in an oil-filled cylinder 6 arranged to control the speed of the piston. The. cylinder 6 has an enlarged bore provided with longitudinal ribs 22 and cross ribs 30, and also has ports 29 near each end connected through adjustable valves 21 with the enlarged portions, the whole being so arranged that during the stroke of the piston from left to right, Fig. 3, its speed at points 11. ...20 is shown by the curve in Fig. 2. The controlled switches are so arranged that switching operations may be performed while the piston is moving rapidly, for example switches 24 are opened at point 14 and switches 25 and 31 and closed at point 18. During the slow motion of the piston 7 the switch may be mechanically locked, for example, at point 16 the member 27 may be caused to engage the slot 28 or the current may be allowed to fall in readiness for a further switching operation.
Patent GB-1249308-A (GB)
Title: Battery of primary cells through which electrolyte is circulated
Inventor: MARTIN DERICK JOHN
IPC: H01M50/77
Filed: 1968-05-08
Abstract: 1,249,308. Centrifugal and axial-flow pumps. QUALCAST Ltd. April 14, 1969 [May 8, 1968], No.21875/68. Heading F1C. [Also in Division H1] A centrifugal impeller filter device 40, driven by motor 46 via shaft 51, for circulating and filtering electrolyte through a storage battery, comprises a hollow rotor 56 mounted coaxially on drive-shaft 51 which carries an impeller blade 62 at one end and supported for rotation within casing 52, rotor 56 having a frustro-conical portion 58 provided internally with a deflector strip 59 in the form of a spiral helix and being arranged to receive at its wider end electrolyte carrying dispersed solid matter from the battery, and to deliver from its narrower end electrolyte carrying coagulated solid matter. During operation the whole of rotor 56 with sleeve 63 which is coaxial with shaft 51 rotates rapidly abouts its axis and electrolyte flowing into rotor 56 through ports 69 is accelerated outwards by impeller blades 62. Solid matter then coagulates and collects against the walls of rotor 56 and is transported into outlet pipe 54 by the action of the helical deflector strip 59. The mixture of electrolyte and coagulated solid particles is pumped by impeller device 40 from outlet pipe 54 into a header tank.
Patent GB-632346-A (GB)
Title: Improvements in and relating to the preparation of 1:4-dihalobutanes
IPC: C07C17/093
Filed: 1947-08-08
Abstract: 1 : 4-Dihalobutanes are prepared by reacting hydrogen chloride or hydrogen bromide with tetramethylene oxide in the liquid phase at a temperature within the range of 60 DEG  to 200 DEG  C. in the presence of either a heterocyclic amine hydrohalide catalyst corresponding to the hydrogen halide being reacted and having a molecular structure which includes a pyridine nucleus, or a compound of the formula <FORM:0632346/IV (b)/1> wherein R is a hydrogen atom or an alkyl or aralkyl radical, Y is an alkyl radical and X is a chlorine or bromine atom corresponding to the hydrogen halide being reacted.  Examples given of amine catalysts are the hydrochlorides and hydrobromides of pyridine and quinoline and the hydrochlorides of isoquinoline, 2-methyl pyridine, 3-methyl pyridine, 2 : 5-methyl ethyl pyridine, 2-propyl pyridine, 2-ethyl-3 : 5-dimethyl pyridine, 2-methyl quinoline, and 4-methyl quinoline; hydrochlorides and hydrobromides of mono-, di- and tri-alkylamines having 1-6 carbon atoms per alkyl group such as methylethylamine, methyl diethylamine, methyl amylamine and methyl diamylamine, and amines having higher alkyl groups such as decyl and dodecyl groups or aralkyl groups such as dimethylbenzylamine hydrochloride; quaternary ammonium salts such as tetramethyl ammonium chloride, tetraethylammonium chloride and trimethyl benzyl ammonium chloride and the corresponding bromides. The process may be effected in batchwise or continuous fashion and at atmospheric or higher or lower pressures.  In the batchwise method, the catalyst compound may be dissolved in the form of its free base in the tetramethylene oxide and the hydrogen halide passed in; the hydrogen halide salt is first formed and then the tetramethylene oxide converted into the dihalobutane and water. In the continuous method, tetramethylene oxide and hydrogen halide are added continuously to a catalytic medium comprising the amine hydrohalide. If the melting-point of the catalyst is above the selected reaction temperature, sufficient water may be added to render the medium liquid at that temperature.  Preferably, stoichiometrical proportions of reactants or excess of tetramethylene oxide are used.  Catalyst concentrations of as low as 5 to 10 per cent by weight of the reaction medium may be used but preferred amounts are at least 50 to 70 per cent.  In the continuous method, the products are preferably distilled off as formed in which case the reaction medium consists almost entirely of the catalyst.  Unreacted oxide may be recovered and recycled. The hydrogen halide may be used in anhydrous gaseous form or in aqueous solution.  Examples illustrate the preparation of the dichlorobutane, the catalysts employed being quinoline, isoquinoline and 2-methyl quinoline hydrochlorides (all formed in situ) and tetraethyl ammonium chloride.  Minor amounts of 4 : 41-dihalo-dibutylether are formed which may be recycled for conversion into the corresponding dihalobutane.
Patent GB-297816-A (GB)
Title: Improvements in or relating to apparatus for the separation of oil from oil-containing substances
IPC: C11B1/10
Filed: 1928-07-28
Abstract: 297,816. Krupp Grusonwerk Akt.- Ges., F. Sept. 30, 1927, [Convention date]. Addition to 272,118. Fats and fatty oils, extracting by solvents.- In apparatus for the extraction of oil as described in the parent Specification, in which solvent and the seeds or like are passed in the same direction through each extractor but in opposite sequence through the series of extractors 1, 2, 3, and the mixture is pressed as it leaves each extractor, each extractor is horizontal instead of inclined. Preferably the extractors are superposed, the presses 5, 6, 7 are at the side thereof, and the fresh solvent pipe 13 is connected to the charging end of each extractor to supplement automatically that passing through the apparatus.
Patent GB-853466-A (GB)
Title: Improvements in and relating to electromechanical transducers
Inventor: MINTON MERTON
IPC: H04R17/04
Filed: 1955-07-29
Abstract: 853,466. Gramophone pick-ups. COSMOCORD Ltd. Oct. 29, 1956 [July 29, 1955], No. 21970/55. Class 40 (4). A pick-up having two styli arranged for alternate use comprises an open-ended casing in which a piezo-electric transducing element together with its complient supporting pads is inserted from one end, the piezo-electric element being embraced at its unrestrained end by a compliant member which couples the element to the styli. As shown in Fig. 1, a rochelle salt or barium titanate transducing element 11 is supported at rear and central positions within a moulded insulating casing 10 by compliant pads which may be formed of plastized polyvinyl chloride either as separate units or as a combined moulding. These pads may have their contact surfaces with the casing formed with integral projections to modify the compliance. A compliant member 13 formed of the same material as the pads is carried on the outer end of element 11 and supports short carriers 14 fitted with styli 15, the casing being tapered at this end to provide extensions, Fig. 2, which protect the element from excessive stylus pressure. In an alternative arrangement, Figs. 4 and 5, the compliant member 31 supporting the styli completely encases the element 30, and has pivot recesses which are engaged by pivots formed on a frame 33 of plastic material having a relatively high modulus of elasticity. In a modification, the compliant member 31 may be formed with pivot-pins which engage recesses in the casing 34 or vice versa. In a further embodiment, Fig. 6, the compliant member 40 is supported by pivots 44 as shown, and has a slot 49 which modifies the compliance in one plane. An arrangement is also described, Figs. 7 and 8, in which the piezo-electric element 51 is coupled by the compliant member 55 to flanged cantilever stylus arms 56. In this arrangement the rear end of the element is held between metal strips 52 which also serve as terminal connections, while the element is centrally supported by an encircling compliant part 53 which passes through apertures in the casing 52 and has enlarged extremities which carry the stylus arms. Specification 760,787 is referred to.
Patent GB-711952-A (GB)
Title: Improved fuel release valve for oil engines
IPC: F02M63/02
Filed: 1949-08-24
Abstract: 711,952. Engine stop-gear. BARCLAY, CURLE & CO., Ltd., and McNEE, J. B. Sept. 25, 1950 [Aug. 24. 1949], No. 21996/49. Class 122(4) [Also in Group XXVIII] In a fuel supply system for an internal-combustion engine in which a fuel supply pump supplies a manifold with outlets to each of the engine cylinders, a release valve, or valves, is, or are, associated with the pump and are operable by electromagnetic devices under abnormal pressure conditions in the manifold. Fig. 2 shows an arrangement in which a release valve 6 opens against the pressure in the manifold and is associated with a rocker 11 oscillated by a moving part of the engine. A motion transmitting member 17 is attached to the armature 19 of an electromagnet 18 so that when the electromagnet is energized, the member 17 is raised and a surface 17a is positioned between the rocker 11 and tappet 15 so that the valve is opened and retained open by a detent, not shown. The electromagnet is energized when a contact 24 on a pressure gauge 21, connected to the manifold, bridges contact strips 25, 27 when the pressure is low. e.g., when an injection valve sticks open.
Patent GB-683848-A (GB)
Title: Improvements in and relating to welding
IPC: F01D5/06
Filed: 1950-09-07
Abstract: 683,848. Welding by fusion. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 7, 1950 [Sept. 23, 1949], No. 22085/50. Class 83 (iv). An overlapping welded joint comprises proximate pieces of metal having root sections extending therefrom, the inner surfaces of which are overlapped to form a single interstice therebetween extending in a single direction only which is substantially parallel to stresses set up by centrifugal force to which the pieces are to be subjected, grooved portions being machined from opposite surfaces of each piece, separated by the roots sections, to form substantially symmetrical spaces for the deposit of weld metal. In one embodiment, a rotor rim 10 of a gas turbine wheel is welded to a hub 9 arranged so that roots 12, 13 overlap and form grooves 14, 15 in which weld metal is deposited from an arc stream. There is no necessity to chip out the root sections.
Patent GB-953425-A (GB)
Title: Fertilizers
Inventor: BARCLAY KEITH SCOTT
IPC: C05C1/00
Filed: 1959-06-27
Abstract: Compound fertilizers containing phosphates and ammonium nitrate are treated with an amino compound which is a primary or secondary amine such as toluidine or diphenylamine or a salt thereof such as the hydrochloride; or ammonium carbamate, ammonium sulphamate, acetamide, or calcium cyanamide, and may comprise 0.1 to 5.0% by weight of the fertilizer.  It may be admixed with the fertilizer in the solid form or admixed or sprayed while in aqueous solution. The phosphate may be superphosphate, triple superphosphate, monocalcium phosphate, dicalcium phosphate, monoammonium phosphate, diammonium phosphate or phosphoric acid; ammonium nitrate, ammonium sulphate and potassium chloride may also be added.  In an example 0.25 or 0.1% by weight of ammonium sulphamate is added to a compound fertilizer.  Specification 849,910 is referred to.