baber/WOPTO huggingface dataset:
Patent GB-1124780-A (GB)
Title: Process and apparatus for obtaining a solid product from melts, solutions, slurries and the like
IPC: B01J2/04
Filed: 1966-11-28
Abstract: <PICT:1124780/C1/1> Melts, solutions or slurries of ammonium compounds are granulated by spraying the melt or slurry on to a fluidized bed comprising small cores of the solid, the solids being put in at one end of the bed which moves longitudinally and withdrawn at the other.  An elongated trough 1 is mounted on springs 2 and is vibrated vertically and longitudinally by means 4.  The cores 13 forming the fluidized bed rest on grid 3 through which a gas is supplied from blower 5 via valve 6 and flexible tube 7, the gas being extracted through tube 10 and fan 11.  Melt or slurry is sprayed on to the bed from nozzles 14 arranged adjustably above the bed, and the particles are moved along the bed by vibration from 4 and optionally by inclination of the bed 13 to the horizontal.  The coated cores comprising the product are removed at 16 where the bed is no longer fluidized and are graded, small particles being returned to the bed via shoot 12. The fluidizing gas may react with the particles to harden them and may be a mixture of gases in which case the trough 1 may be divided into sections each with its own gas feed means.  The gas may be heated to dry the granules. The process is particularly applicable to fertilizer materials, especially ammonium nitrate solutions and the slurries and postes formed in the manufacture of complex fertilizers in the nitrosulphuric, nitrophosphoric and nitrocarbonic processes.
Patent GB-1370478-A (GB)
Title: Injection of a ceramic into a mould
IPC: C04B35/565
Filed: 1971-11-19
Abstract: 1370478 Injection moulding ceramic materials ROLLS-ROYCE (1971) Ltd 13 Nov 1972 [19 Nov 1971] 53786/71 Heading B5A A method of making an article from a mixture of alpha silicon carbide, graphite and a binder, includes the steps of charging a chamber with the mix, attaching the chamber to a mould, heating the chamber and mould, forcing the mix through a nozzle in the chamber so as to firstly compact the mix and secondly inject it it into the mould, increasing the force so as to further compact the mix whilst in the mould member, then removing the force, separating the chamber from the mould and then the mix from the mould. The moulded mix may be reheated to remove the binder and may be heated a third time in a vacuum or inert atmosphere in the presence of molten silicon so as to absorb the silicon which reacts with the graphite to form beta silicon carbide.
Patent GB-541450-A (GB)
Abstract: 541,450. Magnesium sulphate and chloride. OCEAN SALTS (PRODUCTS), Ltd., and ADAMS, B. A. May 24, 1940, No. 9154. [Class 1 (iii)] Magnesium chloride solution prepared from sea water by means of an organic cation exchange material, as described in Specification 536,266, is contacted with an organic cation exchange material having exchangeable hydrogen ions whereby hydrochloric acid is produced and the exchange material is charged with magnesium ions. The latter material is then treated with sulphuric acid to produce magnesium sulphate solution, which is concentrated and crystallized. and to regenerate exchangeable hydrogen ions in the exchange material to make it ready for re-use. The hydrochloric acid from the first stage is contacted with an organic anion exchange material previously treated with an alkali, and thus containing hydroxyl ions, whereby water is produced and the exchange material is charged with chlorine ions. The latter material is then treated with a suspension of magnesium hydroxide, prepared from sea water as described in Specification 535,852, to produce magnesium chloride solution, which is concentrated and crystallized, and to render the exchange material capable of adsorbing further chlorine ions. Specifications 450,308, 450,309, 533,509 and 535,854 also are referred to.
Patent GB-1180696-A (GB)
Title: Ceramic to Metal Seals for Containing High Temperature Vapors
IPC: H01J5/20
Filed: 1968-11-18
Abstract: 1,180,696. Ceramic-metal seals. WESTING- HOUSE ELECTRIC CORP. 18 Nov., 1968 [29 Dec., 1967], No. 54593/68. Heading B3V. [Also in Divisions C1 and H1] End closure members of niobium, tantalum or molybdenum are sealed to the alumina envelope of an electric discharge lamp by a composition of aluminium oxide with one or more of the oxides of yttrium, praseodynium, neodynium, samarium, europium, gadolinum, terbium, dysprosium, holmium, erbium, thulium ytterbium and lutetium in nearly eutectic proportions. The compositions are made by suspending the mixed oxide powders in amyl acetate, optionally with an organic binder which is eliminated on firing. The composition is applied to the surfaces to be joined and fired. The entectic compositions contain 75-82 mole per cent Al 2 O 3  but deviations of up to 5 mole per cent from this can be tolerated.
Patent GB-1126039-A (GB)
Title: A method of preparing alkaryl esters of alkyl pyrocatechol-phosphorous acid
IPC: C07F9/6574
Filed: 1965-12-29
Abstract: 1,126,039. Aromatic cyclic esters of phosphorous acid. A. RYBAR, J. HOLCIK, L. ROSIK and F. STRNAD. 29 Dec., 1965, No. 55024/65. Heading C2C. [Also in Division C3] Novel esters of substituted catecholphosphorous acid of the formula where R, R<SP>1</SP> is a linear or branched alkyl, cycloalkyl, or aralkyl radical, and R<SP>11</SP> is a hydrogen atom or an aralkyl radical are prepared by condensing 1 mol. of an appropriate o-phenylene phosphorous acid chloride with 1 to 1À3 mol. of an appropriate phenol for 2 to 15 hours at 100‹ to 170‹ C. The phosphorous acid chloride starting materials are prepared by reacting (Example. 1) tert-octyl catechol with PCl 3  in the presence of water, and (Example 2) α-phenyl-ethyl catechol with PCl 3  in the presence of water. The ester products are useful as antioxidants and stabilizers for natural and synthetic rubbers.
Patent GB-1377979-A (GB)
Title: Fluoridecontaining composition process for its preparation and method of fluorinating drinking water
IPC: C02F1/52
Filed: 1971-11-26
Abstract: 1377979 Water fluoridation and purification: hydrated aluminium sulphate composition BOLIDEN AB 26 Nov 1971 [30 Nov 1970] 55136/71 Headings C1A and C1C A water-fluorinating and -purifying composition comprises aluminium sulphate hydrate in powder or granulate form and homogeneously distributed through the hydrated sulphate a fluorine compound in an amount corresponding to 0À5-5À0% by weight of fluorine based on the total weight of the hydrated sulphate and fluorine compound, the fluorine compound arising from the addition of a compound selected from NaF, HF, H 2 SiF 6 , Na 2 SiF 6 , (NH 4 ) 2 SiF 6  and Na 3 AlF 6  to the aluminium sulphate hydrate, the latter in the form of an aqueous solution or melt. The composition may be prepared by a process comprising forming an aqueous solution or melt of aluminium sulphate sulphate, adding an appropriate amount of the selected fluoride and crystallizing out an aluminium sulphate hydrate having a fluorine compound homogeneously distributed therethrough. The aqueous solution of aluminium sulphate may be prepared by digestion with sulphuric acid of an aluminium-containing material, e.g. aluminium hydroxide or a clay or bauxite; the solution may be filtered and concentrated to an Al 2 O 3  content of 14-18% before addition of the fluoride. Raw water is treated by adding thereto an amount of the composition which is preferably such as to provide 15-150 mg. of the sulphate hydrate and fluorine compound per litre of water treated and removing the resulting flocks carrying down impurities, giving a fluoridated drinking water. When the raw water already contains a high fluorine content, say 4%, the flocculation brings down some of the fluorine providing a safe-guard against over-fluoridation.
Patent GB-1486560-A (GB)
Title: Ignition devices
IPC: F02P9/00
Filed: 1973-11-29
Abstract: 1486560 Ignition systems ASSOCIATED ENG Ltd 21 Nov 1974 [29 Nov 1973] 55443/73 Heading FIB [Also in Division F4] A spark ignition device suitable for use in internal combusion engines, gas turbine engines or oil-fired burners comprises first and second electrodes 16, 28 which define an annular gap 30 such that with a first potential applied between the electrodes, breakdown does not occur and a trigger electrode 12 which when a second potential is applied between it and one of the other electrodes, breakdown occurs between the first and second electrodes. The position of the third electrode can be adjusted. The electrodes are made of brass, copper or ferrous material with a silicon carbide or nickel alloy tip.  Reference has been directed by the Comptroller to Specification 1410471.
Patent GB-1407506-A (GB)
Title: Load cell
IPC: G01L1/22
Filed: 1972-11-30
Abstract: 1407506 Load cells CARL SCHENCK AG 30 Nov 1972 [12 Sept 1972] 55464/72 Heading G1N A load cell having an annular deformation member 1 on which are mounted electromechanical transducer elements 10 has the force to be measured applied thereto at its outer periphery by an integrally formed tubular member 5, the counteracting force being applied by a second tubular member 3 arranged concentrically with the member 5 and connected thereto by an integrally formed piece 2. As shown, the transducer elements are in the form of windings arranged on the flat ends of the deformation member 1. In an alternative, Fig. 2 (not shown), strain gauges are arranged at the axial ends of the bore in the member 1. In another embodiment, Fig. 3 (not shown), the tubular members are frusto-conically shaped so that flanges 4, 6 at their ends have the same diameter. Tightly fitting covers 8 are also provided. Resistance or semi-conductor type strain gauges may be provided.
Patent GB-1451807-A (GB)
Title: Infinitesimal hardness value measuring
IPC: G01N3/02
Filed: 1973-11-29
Abstract: 1451807 Hardness testing K M OESTERLE 29 Nov 1973 [4 Dec 1972] 55527/73 Heading G1S The infinitesimal hardness value (IHV) of plastics, coating and ductile materials has previously been determined using normal microhardness testers and by repeatedly moving and pressing a Vickers pyramid under varying loads on to the test piece for constant periods and recording the indentation depth y with reference to the corresponding load F, Fig. 1. The quotient F/y is then plotted against F and extrapolated to the limiting value F#O, the intersection between the extrapolated curve and the F/y ordinate axis then giving the IHV value. The method of the invention has the indenter penetrating under a varying load and employs an apparatus, Fig. 3, in which an indenter 2 controlled by electrical or mechanical means 3, 4 has its depth recorded by means 5. Signals representing the loads and the depths are amplified at 6, 8 and recorded at 9, which readings are used by a computer to find the point of intersection of the curve with the F/y axis. Tests may be performed in an air conditioned chamber into which test pieces are moved on a conveyer, or the test piece may be stressed mechanically or by heating or cooling, or subjection to acid or solvent vapours or corrosive gases. Further stresses may be applied electrically or magnetically or by many forms of radiation. The indenter may be a rotatable sphere, a knife-edged wheel or a star-shaped wheel.
Patent GB-1391227-A (GB)
Title: Predetermined-torque-release wrench
IPC: B25B23/142
Filed: 1972-12-04
Abstract: 1391227 Torque wrenches NAKUMURA SEISAKUSHO KK 4 Dec 1972 [4 Dec 1971] 55814/72 Heading B3N A torque release wrench comprises a handle member 11, a torque transmitting arm 10 having a wrench head 15 and being pivoted at 14 to the handle member, a slidable support block 18 and a leaf spring 17 having an arcuate shape in cross-section with the concave surface in faced relationship with the free end of the torque arm. Torque adjustment is by screw 24.
Patent GB-1174937-A (GB)
Title: Improvements in or relating to Thermal Control Devices
Inventor: COPAGE DONALD
IPC: H01H19/62
Filed: 1966-12-15
Abstract: 1,174,937. Thermal switches; mechanical switches. DIAMOND H CONTROLS Ltd. 12 Dec., 1967 [15 Dec., 1966], No. 56179/66. Heading H1N. An energy regulator, for the control of hotplates, grill elements and the like divided into two sections, comprises a main switch, an auxiliary switch, an operating spindle and means for maintaining the auxiliary switch open throughout a substantially complete rotation of the operating spindle in one direction from a starting position while permitting it to close by rotation in the opposite direction from the starting position. In one embodiment spindle 1 has a cam 2 with a radial projection 2a bearing, in the off position, on cam follower 3a on switch arm 3 mounted on the side of a pillar 5, on the top of which is mounted a spring arm 6 with downwards projections 6a and 6b. When the spindle 1 is rotated anti-clockwise, projection 2a moves away from follower 3a and arm 3 is latched open by engaging projection 6a. When spindle 1 is rotated clockwise projection 2a engages projection 6b, lifting arm 6 clear so that arm 3 closes against fixed contact 4. When projection 2a moves away from arm 6 projection 6a rests on top of arm 3 and cannot hold arm 3 open. In a second embodiment, Figs. 5-8 (not shown) on spindle 1 is a cylindrical collar cam 2a, the cylindrical surface being opened at one point in the circumference to provide a lead into the interior of the cylinder for a cam follower 3b on one side of the opening and a lead on to the outside of the cylinder on the other side, rotation of cam 2a in one direction therefore causing the cam follower 3b to be on the inside of the cylinder and the contact held closed and rotation in the other direction causing the cam follower 3b to be on the outside of the cylinder and the contact held open.
Patent GB-1261462-A (GB)
Title: Primary cells
IPC: H01M6/08
Filed: 1969-11-17
Abstract: 1,261,462. Dry primary cells. VARTA G.m.b.H. 17 Nov., 1969 [19 Nov., 1968], No. 56201/69. Heading H1B. A cylindrical dry primary cell has a tubular consumable electrode, a central conducting rod and a depolarizer therebetween, a synthetic resin packing between the upper end of the tubular electrode and the rod, and a sealing washer in the lower part of the tube with a contact disc below the washer, the washer having a peripheral lip depending from it which is pressed against the inside of the tube by the flanged lower end of the tube thereby forming a liquid-tight seal. The cell is preferably made by extruding the depolarizer mix, helically winding a metal strip around the extrudate, seaming the strip to form a tube, cutting lengths off the enclosed extrudate, inserting the packing in one end and the washer and disc in the other end, flanging the end of the tube so that the edge seals the lip on the washer against the inside of the tube, pressing in the conducting rod, capping the rod, slipping a cardboard sleeve and an outer sheet-metal sleeve over the assembly and flanging the sheetmetal sleeve to hold the cap in place. The cell can also be assembled in a different order.
Patent GB-1469228-A (GB)
Title: Structural assemblies for building construction
IPC: E06B1/00
Filed: 1972-12-06
Abstract: 1469228 Cavity closers RADWAY PLASTICS Ltd 4 March 1974 [6 Dec 1972] 56305/72 Heading E1B A damp proof course and cavity closer for use at door or window openings in cavity walls comprises a one piece corrosion and damp resistant extrusion, preferably P.V.C., having a cavity entering portion 20 comprising spaced parallel walls 24 and 26, and an adapter portion 18 comprising a wall 22 for fixing to the door or window frame 40, spacer walls 36 and 38 and abutment walls 32 and 34 for bearing against the end faces of the cavity wall, the extrusion is also being provided with at least one keying formation 30 for receiving mortar or wall ties at the gaps between adjacent courses of brickwork. In a modification the open end of the cavity entering portion is closed by a ribbed wall and the abutment walls 32 and 34 are set in different planes so that the inner leaf of the wall may form an outwardly facing reveal. In a method of building the extrusion is fitted to the door or window frame and the wall built up therearound. Reference has been directed to Specifications 1469229 and 1468794. Reference has been directed by the comptroller to Specifications 1302694, 1302695, 1302696 and 1340331.
Patent GB-565927-A (GB)
Abstract: 565,927. Ignition systems. HASLER AKT.-GES. WERKE FUR TELEPHONIE UND PRAZISIONSMECHANIK. March 4, 1943, No. 3568. Convention date, Feb. 2, 1942. [Class 7 (iv)] In a magneto system producing a number of sparks during each ignition period, the number of high-tension impulses produced per revolution of the cam-shaft is a multiple of the number of engine cylinders and at least two successive impulses are led to the same sparking plug. As shown, each half of a double magneto comprises primary and secondary windings 1, 4 and a contact-breaker 2. The distributer 5 comprises contacts arranged in pairs 6, 8 to give two successive sparks at each plug 7. The contact breaker is opened to produce the first spark of each firing operation and remains open while the remaining spark or sparks are produced.
Patent GB-1108858-A (GB)
Title: Multimode cardiac pacer
IPC: A61N1/368
Filed: 1966-12-20
Abstract: 1,108,858. Transistor oscillator circuits. CORDIS CORPORATION. 20 Dec., 1966 [6 May, 1966], No. 56864/66. Heading H3T. [Also in Division A5] Cardiac pacer apparatus comprises a source able to generate electric pulses at a preset rate conformable to the normal heart beat, connections for applying the pulses to the patient's heart, and connections for applying a potential obtained from the heart so as to advance the timing of the pulses from the source. The potential may be obtained from the atrium or the ventricle of the heart and the apparatus may include a switch S to select one of these potentials. As shown, but with the switch S at the contact B, the apparatus receives a P-wave signal from the atrium electrode and this is passed through a transistor amplifier Q 1 , Q 2  and a blocking condenser C 4  to a monostable multivibrator Q 3 , Q 4  which serves as an atrioventricular (A-V) delay simulator. The signal causes the multivibrator to switch to its metastable state from which it returns (after 0À12 secs.) and then delivers a negative pulse through a diode D 3  to cause transistors Q 5 , Q 6  in a free-running multivibrator to conduct. An output pulse (about two milliseconds) is passed from the multivibrator, through a tap 2 on the resistors R 16 , R 20 , and a power transistor Q 7  to an electrode 3 at the ventricle. In the absence of a P-wave signal advancing the pulse generation, the free-running multivibrator delivers a pulse to the heart about 70 times per minute. The refractory period of the heart is simulated by the diode D 3  which, each time the transistors Q 5 , Q 6  conduct, is biased so that it is non- conductive and a further stimulating pulse cannot be generated until (e.g. 0À325 seconds later) the biasing charge has leaked away from the capacitors C 9 , C 10 . If the P-wave signal from the patient's heart is weak, the switch S may be moved to the position A, so that the apparatus provides either regular pulses derived from the free-running multivibrator, or pulses initiated by the QRS-wave signal received at the ventricular electrode 3. In any mode of operation, the apparatus does not provide a pulse to the heart while the multivibrator Q 3 , Q 4  is in its metastable state or during the refractory period determined by the bias on the diode D 3 . The entire pacer apparatus, including the mercury battery B1-B5, may be implanted in the patient's body and the switch S may be operated by magnetic, thermal, radio, or video means, or by mechanical shock. The electrode 4 located in the patient's abdomen may comprise a metal shield surrounding the implanted apparatus.
Patent GB-1281305-A (GB)
Title: Improvements in or relating to the continuous spinning and stretching of synthetic filaments
IPC: D02J1/22
Filed: 1970-12-03
Abstract: 1281305 Stretching filaments SNIA VISCOSA SOC NAZIONALE INDUSTRIA APPLICAZIONI VISCOSA 3 Dec 1970 [4 Dec 1969] 57397/70 Heading B5B A method of continuously spinning and stretching synthetic filaments in a continuous operational sequence comprises the steps of extruding said filaments from a spinneret, cooling and conditioning the extruded filaments, and subjecting said filaments to at least one mechanical stretching operation between at least two drawing devices adapted to impart different linear speeds to said filaments, wherein after said cooling and conditioning steps and before said filaments are engaged by the first of said drawing devices, said filaments are bent at least once and given a preliminary stretch. . In apparatus as shown, filaments 14, of a synthetic thermoplastic material, especially polyester filaments, are extruded from spinneret 14 and passed through blowing box 16 and elongated chamber 18 wherein they are cooled and conditioned, and passed through thread guides 22, and sizing rollers 24 and 26, on their way to conventional feed and draw godets 28 and 30. Prior to stretching being effected by godets 28 and 30, the filaments are given a preliminary stretch by passage around device Z, comprising a pair of small cylinders 36 and 38, shown more clearly in Fig. 2. These cylinders are located in such a manner as to force the filaments to follow a path including a number of bends, in particular two oppositely directed bends as shown by dot and dash lines in Fig. 2, as well as to exert a frictional resistance on the running filaments in order to generate a tension slightly greater than the post-spinneret tension, at the small filament length S between the device Z and the upstream godet 28. Suitably, the tension in the filaments at point X is about 0À5 g.p.d. which is increased by passage through device Z so that the tension at point S is about 0À6 to 0À7 g.p.d. The small cylinders 36 and 38 may have their surfaces treated so as to provide the required frictional resistance. As shown, the filaments may be successively bent with decreasing radiiof curvature, and in general where the filaments are successively bent in opposite directions, the radii of curvature should have a ratio in the range of 1 : 2 to 2 : 1. Desirably, the filaments are bent at least once with a radius of curvature in the range of 10 to 21 mm. and with an angular amplitude in the range of 20 to 130 degrees. The use of the apparatus enables spinning speeds to be raised to 800 to 1000 metres per minute at take-up.
Patent GB-1247275-A (GB)
Title: Marine gear
IPC: F16D25/10
Filed: 1969-11-25
Abstract: 1,247,275. Reversing gear; friction clutches. CATERPILLAR TRACTOR CO. 25 Nov., 1969 [12 Dec., 1968], No. 57531/69. Headings F2C and F2D. A marine reversing gear comprises nested multi-disc friction clutches 27, 25 housed in a casing 15, fast with an engine-driven flywheel 17, and selectively hydraulically operated by a freely floating common piston 37 for ahead or astern drive to an output shaft 23 via a quill shaft 31 and gears 19, 51 or an inner shaft 29 and gears 21, 69, 71 respectively to a hollow shaft 53 which drives a planetary final drive reduction gear 59, the planet carrier 61 of which is integrally formed with the output shaft 23. The hydraulic pressure is supplied via a control valve 75 and ducts 79 or 87 to one or other side (45 or 47) of the common piston 37 for ahead or astern drive via centrifugally responsive dump valves 83 or 89, the appropriate valve piston 91 being inwardly moved by the hydraulic pressure to close an exhaust port 95 and connect the clutch piston chambers 45 or 47 to the pressure supply via ducts 93, the valve pistons 91 being outwardly moved centrifugally, on cut off of hydraulic pressure via the control valve 75, to evacuate the clutch piston chambers via the exhaust ports 95 and 97 for clutch disengagement, the outer clutch discs 35 being shaped in a Belleville spring form to ensure complete clutch disc separation. The freely floating common piston 37 rotatably slips during initial clutch engagement to avoid shock loading and effect a smooth clutch take-up.