baber/WOPTO huggingface dataset:
Patent GB-591621-A (GB)
Title: Method of producing oils of low pour point and mineral waxes of different melting points
IPC: C10G73/06
Filed: 1945-05-15
Abstract: In the production of de-waxed and low pour point mineral oils and mineral waxes of different melting points from waxy mineral oils, shale oil, brown and bituminous coal tars, synthetic oil and like waxy oils by chilling in two or more steps to successively lower temperatures in the presence of solvents or solvent mixtures and removing, preferably by centrifuging or filtering, the wax precipitated in each chilling step, a known wax conditioner or a wax modifier is added to the oil solution after removing the precipitated wax and prior to or during the subsequent chilling step.  The temperature of the first step may be such that mainly p  hard wax is removed and of the second step that mainly the remaining soft wax is removed.  The solvent may be a halogenated hydrocarbon, such as ethylene dichloride alone or mixed with another solvent such as benzol or methyl ethyl ketone.  The wax precipitated may be removed in the first step by filtration and in the second step by centrifugation.  The wax conditioner or modifier may be added in the form of a solution or dispersion in the same solvent or solvent mixture used for the waxy oil.  The known wax conditioners specified comprise waxes removed in previous chilling steps usually a hard wax. The known wax modifiers comprise condensation products of chlorinated paraffin wax or montan wax with aromatic compounds such as naphthalene, salts of polyvalent metals with oleic, stearic and naphthenic acids such as aluminium stearate, cobalt oleate, and copper naphthenate; and condensation or polymerisation products of hydrocarbons having indefinite structures and varying molecular weights such as asphalts, cracking residues, and isobutylene polymerisates.
Patent GB-307003-A (GB)
Title: Filter for fine filtering of fluids especially fuel oils
IPC: B01D37/04
Filed: 1928-04-26
Abstract: 307,003. Hemmingsen, T. V. March 1, 1928, [Convention date]. Filters. - Apparatus for filtering fuel oil &c. comprises a casing 1 with a conical bore and a conical plug 5 having two series of grooves 12, 13, the deeper grooves 12 being in communication with an inlet 3 and the shallower grooves 13 with an outlet 20. The plug is provided with cylindrical guiding surfaces 7, 8, and there are recesses 10, 11 between these surfaces and the conical part of the plug. Filtration takes place from the grooves 12 to the grooves 13 through the space between the plug and the bore, the width of which space can be altered by axial adjustment of the plug, depending on the thickness of a spacing device 14 placed in the recess 11. The parts are held together between a flange 17 and a tank or pump housing 4 by means of bolts 15. A modification is described in which the plug is centrally bored to receive one or more similar inner filtering elements. Specification 185,402 is referred to.
Patent GB-313041-A (GB)
Title: Improvements in and relating to hot water heating systems for buildings and the like
IPC: F24D3/10
Filed: 1929-04-19
Abstract: 313,041. Schiele, E. L. R. A., and Wittinburg, F. H., (trading as Freyer, R. 0., [Firm of]), and Margolis, A. June 5, 1928, [Convention date]. Heating water.-An open hot water reservoir resting at or below ground level and rising to a height corresponding to the highest static pressure, may also be used to receive expansion water in a heating system. Heated water is distributed to pipes E leading to zones in the reservoir of different temperature, such zones being kept substantially distinct by plates K. Water may be drawn off as desired by various zone delivery pipes H leading to a collector J. In a modification, Fig. 2, a reservoir A has a single zone plate and is connected by a pipe B with a closed reservoir C the level of the water in which is lower than that in the reservoir A which maintains a pressure in reservoir C corresponding to that of steam liberated from supetheated water fed through the pipe D.
Patent GB-474382-A (GB)
Title: Improvements in or relating to high frequency circuit arrangements
IPC: H03H7/01
Filed: 1936-04-29
Abstract: 474,382. Impedance networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., RUST, N. M., and GOODENOUGH, E. F. April 29, 1936, No. 12210. [Classes 40 (iii) and 40 (v)] A band-pass filter comprising resonant circuits not in cascade, is such that at or near the limits and the mid-frequency of the pass-range its overall impedance is resistive, while the phase shift produced by each individual resonant circuit is annulled by that produced by other resonant circuits. The filter is built up, in one way, by consideration of the admittance locus A, Fig. 2, of a parallel tuned circuit and the admittance loci C1 ... C7 of a series tuned circuit. The resultant locus exhibits a loop, (curves CA4 ... CA7), when the admittance of the series tuned circuit is greater than that of the parallel tuned circuit. The loci C4 ... C7 cut the locus A at frequencies f1, f2, and these are chosen as the limit frequencies of the pass-range. The parallel tuned circuit is tuned to a frequency f0=#f1.f2. The two circuits so chosen are combined in parallel. In another way, the filter is built up from two parallel circuits Z1, Z2 in series, Fig. 8. The circuits exhibit vector loci Z1, Z2 as shown in Fig. 9 and the circuits are tuned to f1, f2 and are designed so that the vectors are of equal length and have the same phase angle at f0. More complex circuits envisaged are : a parallel tuned circuit shunted by two series tuned circuits in parallel, and a series tuned circuit shunted by two parallel tuned circuits in series. The filter is particularly adapted for use in reaction amplifiers for short waves, such as that shown in Fig. 3. Two pentodes V1, V2 have an impedance ZC in the common cathode lead and both cathode-anode paths are completed over ZC. To obtain as large an amplification as possible, it is shown that either the coupling impedance ZA1 should be made aperiodic and ZC constituted by the filter developed above, or, alternatively, the product ZC, ZA1 should be as nearly constant in amplitude and phase as possible, as by using a tuned circuit for ZA1 and by making ZC a filter in which the admittance of the series resonant portion is larger than that of the parallel portion, so that the phase differences it introduces annul those produced by ZA1. In Fig. 5, a three-stage reaction amplifier is shown, in which the coupling impedances are tuned circuits TC, and the reaction impedance is a filter ZC, according to the invention, constituted by the elements LCS, CCS, CCP, LCP. The valve capacities SK are preferably tuned out by coils TL. In the amplifier of Fig. 6, circuits TL1 are used to tune out valve capacities, and the filter ZC is connected between the common cathodes and the anode of valve V2. "Voltage feed-back " may be obtained as shown in Fig. 7 where the reaction path includes the filter YC which is a reciprocal of that used in Figs. 5 and 6.
Patent GB-1155357-A (GB)
Title: Plated Wire Recording Head with Selective Electronic Switching to Individual Tracks
IPC: G11B5/49
Filed: 1967-03-15
Abstract: 1,155,357. Magnetic recording. SPERRY RAND CORP. 15 March, 1967 [4 April, 1966], No. 12213/67. Heading G5R. In an arrangement for selectively recording in or reproducing from one of a number of tape tracks the magnetic head disclosed in Specification 1,155,356 and comprising conductor 12 coated with a magnetic material layer 13 and formed with a groove 14 forming the transducing gap, is disposed between the tape 16 and a number of conductors 17-22, one for each tape channel 23-28, each of which, when carrying current in the direction of the tape, saturates the adjacent portion of the magnetic coating of the head and prevents recording in or reproduction from the associated channel. Assuming a signal has to be recorded in channel 27 a switching matrix Fig. 2 (not shown) applies current to all the conductors except conductor 21 associated with channel 27. Thus all the magnetic coating except that adjacent channel 27 is saturated and in this unsaturated portion a circumferential field is set up by signal current applied to conductor 12 via transformer 30 and the signal is recorded in the required channel.
Patent GB-1324315-A (GB)
Title: Production of trialkylphosphonium halides
IPC: C07F9/54
Filed: 1972-03-16
Abstract: 1324315 Trialkylphosphonium halides and alkylhalogeno phosphines KNAPSACK AG 16 March 1972 [3 April 1971] 12289/72 Heading C2P Compounds of the Formula I where R is C 1-3  alkyl and X is halogen, are prepared by flowing a vaporous or gaseous mixture of phosphorus and a C 1-3  alkyl halide, together with a carrier gas, in the absence of oxygen or air, and at 280‹ to 420‹ C. over an active carbon catalyst, subjecting the gaseous reaction mixture to fractional condensation to isolate monoalkyl halogenophosphine, dialkylhalogenophosphine and a two-layer mixture of (R 3 PH)X and unreacted phosphorus therefrom, separating the (R 3 PH)X, and purifying it by heating to temperatures higher than the boiling point of the alkylhalogenophosphines. Yellow phosphorus is preferably used, and X is preferably chlorine or bromine. The carrier gas may be hydrogen chloride, hydrogen bromide, hydrogen, nitrogen, argon or a mixture thereof. The catalyst may be dried at 350‹ to 360‹ C., preferably in the presence of a hydrogen halide, before use. The process of the invention may be carried out continuously.
Patent GB-555601-A (GB)
Title: Improvements in high frequency amplifiers utilising electron discharge devices
IPC: H03F1/13
Filed: 1942-09-02
Abstract: 555,601. Valve amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Sept. 2, 1942, No. 12365. Addition to 534,531. [Class 40 (v)] In a high or intermediate frequency amplifier arranged to effect neutralization of the retroactive currents due to the anode-grid capacity, as described in the parent Specification, the resistance values of the circuits are taken into consideration. The arrangement consists of an inductive output circuit in series with a reactive circuit in the cathode lead and with the inductive branch of the input circuit connected to earth and the capacitive branch to the cathode or vice versa depending on the kind of reactance in the cathode lead. The impedance in the cathode lead X 2 , R, is so related to the load impedance X 1 , R, and the input circuit branch having the same sign as X 2 , impedance X 4 , R 4  and to the anode-grid reactance X, that R 2  = R 4 XŒR 1 X 4 /X 3  and X, = X 4 X 1 Œ R 1 R 4 /X 3 . The Figure shows an arrangement using a capacitive impedance 29 in the cathode lead and the capacitive branch of the input circuit constituted by the tuned circuit 18, 20 and the inductive branch by the choke 43 so that damping of the tuned circuit 18, 20 need not be made unnecessarily high to satisfy the conditions. The Specification gives vector diagrams and equivalent alternating current circuits with a mathematical analysis of the circuit shown and also similar data for the circuits described with reference to Figs. 1 and 2 of the parent Specification.
Patent GB-455686-A (GB)
Title: Fluid pressure motors suitable for starting aeroplane and like engines
IPC: B64F1/08
Filed: 1935-04-23
Abstract: 455,686. Oscillating-vane engines. COFFMAN, R. A., 4733, Center Avenue, Pittsburg, U.S.A. April 23, 1935, No. 12685/36. Divided out of 455,630. [Class 110 (ii)] [See also Group XXVII] In a fluid-pressure motor suitable foi starting aeroplane and like engines, a rotary movement is imparted by ex. plosion gases to e driving member 107 within a toroidal chamber 105 for actuating a driven member 110 con. nected to the member 107 by gearing adapted to impart to the member 110 a speed of rotation different from that of the member 107. The driving member 107 is a vane carried by a sleeve 106 and actuated by gases from the explosion of cartridges in sleeves 141 in a rotary carrier 140, as described in Specification 455,630. The chamber 105 is formed by housing sections 100<a>, 100<b> bolted together and formed with beads 102 engaging grooves in a block 103 provided with a combustion chamber 104 and fitted with an exhaust valve 213, which is actuated by the vane 107 at the end of its stroke, and allows the exhaust gases to escape through a passage 219 to the exhaust pipe 221. The driven member 110 is a sleeve having clutch teeth 135 for engagement with a member 137 of the engine to be started, the axial movement of the sleeve to bring the clutch into engagement being effected by a spring 126 in conjunction with a fixed cam ring 124 engaged by a radial pin 123 carried by the sleeve 110. The sleeve 106 drives the sleeve 110 through planetary gears 114 rotatable on shafts 113 on a plate 111 keyed upon the sleeve 106 ; the gears 114 mesh with a sun gear 118 keyed on the sleeve 110 and with an internallytoothed ring 115 having a limited rotary movement, slots in the ring being engaged by screws 117 secured to a stationary portion of the casing. A coil spring 122, tensioned by the rotation of the sleeve 106 and vane 107, serves as a return spring. During the first part of the rotation of the sleeve 106, the slots in the ring 115 allow the gearing to turn as a unit, until the ring 115 stops and the sleeve 110 is driven at an increased rate. A projecting member 125 on the gear ring 115 engages one of the gear shafts 113 to prevent the gear ring from rolling ahead of the planet gears 114, ensuring the rotation of the gearing as a unit in the initial period of operation.
Patent GB-592138-A (GB)
Title: A new or improved lighter for cigarettes, tobacco pipes, burners and the like
IPC: F23Q2/28
Filed: 1945-05-22
Abstract: 592,138. Electric igniters. COATH, R. J. B. May 22, 1945, No. 12727. [Class 75 (iii)] An electric igniter comprises a torch 12 which may be withdrawn from a column 8 to depress a slidable spring-loaded member 20 to complete a circuit through a filament 23 and light the torch while it is still held in position for the circuit closure. The torch 12 may have a disclike knob 13 and a detachable lower portion 14 bored axially to receive a wick 15 which is held in contact with a felt pad 10 saturated with spirit from a reservoir 5. When the torch is used to depress the member 20, contact pins 24, 27 are brought together and the filament 23 is energized from an electric cell or cells which may be housed in a pair of tubular feet 2 supporting a base 1. The base 1 may. also be provided with an ash tray 33 and the whole igniter may be made to resemble the Eddystone lighthouse.
Patent GB-1006531-A (GB)
Title: Improvements in or relating to steel or the like reinforcements for ceilings, slabs,walls or the like structural units of reinforced concrete
IPC: E04C5/04
Filed: 1964-03-25
Abstract: 1,006,531. Reinforcement grid. BANESTAHLGWEBE G.m.b.H. March 25,1964 [April 3,1963], No. 12734/64. Heading D1K. A reinforcement for structural units of reinforced concrete consists of metallic rods intersecting at right angles and connected together at the points of intersection to form a mat. The spacing between two or more longitudinal rods 1, 2 and 3, 4 at the marginal areas of the mats is different from the spacing between the rods 5 over the remaining area of the mats. In addition the diameter of the rods 1, 2 and 3, 4 differ from the diameter of the rods 5. In a reinforced concrete structure the mats are laid so that these marginal edges overlap. The spacing and diameter of the rods may be greater at the marginal area as shown in Fig. 2 or lesser as shown in Fig. 5. In addition the spacing between the longitudinal rods at one marginal area of a mat may be different from that at the opposite marginal area of the same mat.
Patent GB-1154109-A (GB)
Title: Pneumatic Conveyance Systems.
IPC: B65G51/02
Filed: 1967-03-17
Abstract: 1,154,109. Pneumatic conveying of articles. TOBACCO RESEARCH & DEVELOPMENT INSTITUTE Ltd. 17 March, 1967 [18 March, 1966; 28 June, 1966; 19 Jan., 1967], No. 12749/67. Heading B8A. An apparatus for transferring cigarette filter rods from a bin 5 into a pneumatic conveying system comprises a drum 9 rotatable between two positions of dwell, the rods being moved axially into bores 11 in the drum at one position of dwell and discharged from the bores 11 into tubes of the pneumatic conveying system at the other position of dwell. Rods in the bin 5 gravitate with the aid of agitators 8 into slots 6, and at the one position of dwell, the bores 11 register at one end with the bottoms of the slots 6 and at the other end with suction ports, whereby the rods move into the bores. Cushioning devices are arranged at the suction port end of the bores 11. At the other position of dwell the bores 11 register with conveyer tubes and the rods move into the conveying system. Guard plates 17 actuated by a cam 32 rotatable with the drum 9, support the column of rods in the slots 6, above two rods while the latter are moved into the bores 11. In another embodiment, Figs. 3-7 (not shown), the drum is rotationally oscillated so that each of two rod receiving bores therein alternately registers with a single pneumatic conveying tube. Suction is applied to each of these bores at a point intermediate its length via an auxiliary bore, whereby a cushioning effect is applied to the moving rod. The guard plates associated with the feed slots are alternately cam operated into the column supporting position and each may be held in this latter position by a spring loaded latch from which a solenoid holding force has been removed.
Patent GB-1422761-A (GB)
Title: Casting resins
IPC: C08L29/04
Filed: 1974-03-22
Abstract: 1422761 Casting resins BAYER AG 22 March 1974 [23 March 1973] 12824/74 Heading C3P Casting resins are produced by heating to 20-250‹ C. a solvent-free melt of (A) a partly or completely saponified ethylene/vinyl ester copolymer, (B) an aliphatic or aromatic polyisocyanate, e.g. a polyphenyl polymethylene polyisocyanate, and (C) an inorganic filler, e.g. heavy spar. Component (A) may be a single saponified copolymer or may be a mixture produced by an ester-interchange reaction between saponified and unsaponified ethylene/ vinyl acetate copolymers.
Patent GB-655199-A (GB)
Title: Improvements in or relating to hatch covers or like closure devices
IPC: B63B19/203
Filed: 1948-05-10
Abstract: 655,199. Hatch covers. HAY, S., and SWEET, C. W. May 10, 1948, No. 12838. [Class 113 (i)] In a hatch cover comprising sections 10 hinged to one another at 11 so as to fold concertina fashion, each pair of adjacent hatch sections is provided with spring means arranged when the hatch is in the open position to exert an initial force between said adjacent sections to cause the hatch cover to close by gravitation. The cover is provided with a cable 15 and pulley blocks 19, 20, for drawing together the end sections, rollers 13 on each side of each section engaging tracks on the ship structure, a ramp 23 engageable successively by alternate rollers, and fitting adjacent the stowing position for tilting the end section and limiting its translatory movement. The spring means comprises a spring 39 surrounding a shaft 38 fitted in lug members 34, 37 secured to adjacent cover sections, one end 40 of the spring being secured to one cover section and the other end 42 being secured to the adjacent section. The spring is initially stressed so that when cover sections are closed they tend to open them, but on opening the cover this stress is overcome and is reversed so that cover is finally locked in the open position with the springs urging the sections to move to the closed position. The initial stress in the spring provides for shock absorption during the final closing stage. Specification 607,163 is referred to.
Patent GB-238942-A (GB)
Title: Combined means for braking and admitting water to the induction pipes of internal combustion engines
IPC: F02M25/022
Filed: 1924-05-27
Abstract: 238,942. Walsh, R. May 2f7, 1924. Charge, moistening; induction pipes, fittings for.-A device for admitting water to the charge or supplying air alone or mixed with steam for braking, comprises a casing A connected to a flange secured between flanges on the induction pipe and carburettor outlet, a chamber B provided with a pipe c<2> dipping into a water tank on the dashboard, and a chamber D connected by a pipe d<1> to the bottom of an openended overflow pipe from the radiator. The chamber A is separated from the chambers B, D by a spring-loaded valve C provided with a tubular steam c<1> on which is mounted an interchangeable water inlet nozzle c, the valve C being operated from a distance by a Bowden wire c<5> and a lever c<6> which bears on an adjustable collar c<7> on the valve stem. When the engine is working, water is drawn by suction from the tank through the pipe c<2>, nozzle c, stem c', and the chamber A to the induction pipe; if the valve C is opened with the throttle closed, the suction on the nozzle c practically ceases, and air, or air mixed with steam from the radiator, is drawn through the pipe d<1>, apertures d, and chamber A to the induction pipe for braking.
Patent GB-1442734-A (GB)
Title: Make-up valve for hydrodynamic transmission elements
IPC: F16H61/64
Filed: 1974-03-22
Abstract: 1442734 Valves KLOCKNER-HUMBOLDTDEUTZ AG 22 March 1974 [10 March 1973] 12989/74 Heading F2V [Also in Division G3] The flow of fluid from a pump 10 to a hydrodynamic converter 21 is controlled by a valve 7 which is displaced against a spring 8 to divert part of the pump output to a return line 19 when the pump output pressure increases. The valve is displaced by the pressure drop across an orifice 14 adjusted in accordance with temperature by a bimetallic coil 26 and a member 27.
Patent GB-738273-A (GB)
Title: Improvements in or relating to vapour electric arc converter arrangements
IPC: H01J13/32
Filed: 1952-05-22
Abstract: 738,273. Metal vapour converters. GENERAL ELECTRIC CO., Ltd., GALLIZIA, E., and TASKER, H. C. May 13, 1953 [May 22, 1952], No. 13022/52. Class 39 (1). A vapour electric arc converter arrangement comprises a converter vessel, an electric fan for causing cooling air to flow over the converter vessel, and means arranged by control of the direction of rotation of the fan, to control the cooling effect of the air in dependence upon the temperature of the vessel or some part thereof so that an increased cooling effect is obtained at higher vessel temperatures. In the arrangement shown in the drawing the rectifier vessel 1 has a condensing dome 2 and a plurality (normally six) anode side arms 3 and is cooled by a centrifugal type cooling fan having propeller blades 5 and a driving motor 4 which is of the three-phase reversible type supplied from a three-phase supply 6, two phases of the supply being reversible by a reversing contactor 7 having contacts 8 and an operating coil 9. The rectifier vessel 1 and fan may be contained in a common cubicle. The coil 9 is energized from a supply 10 and is controlled by an adjustable thermostat 11 arranged to measure the temperature of the dome 2, the contacts 12 of the thermostat 11 being normally closed but being arranged to open when the temperature of the dome 2 reaches a predetermined adjustable value. Alternatively the thermostat 11 can be mounted at 13 on one of the side arms 3. The thermostat controls the reversing contactor 7 so that when the temperature of the dome 2 or arm 3 is low the motor 4 runs in the incorrect direction so as to give an inefficient cooling effect by the blades 5, the reduction in cooling being about 75 per cent. When the temperature of the dome 2 or arm 3 rises, the contacts 12 are opened, the coil 9 de-energized and the reversing contactor 7 operated to energize the motor 4 in the correct direction to give full cooling. An axial flow type of fan may be used instead of the centrifugal type, the air flow over the rectifier vessel then reversing under the control of the thermostat.