baber/WOPTO huggingface dataset:
Patent GB-383612-A (GB)
Title: Manufacture of derivatives of cellulose, starch or the like
IPC: C08B11/08
Filed: 1931-02-12
Abstract: Carbohydrates such as cellulose or starch materials containing the same, or transformation products or derivatives thereof, are caused to react with a gaseous mixture of an alkylene oxide and an alkylating agent at a reduced pressure.  The etherifying gas mixture may be circulated through the material, and the temperature of the reaction may be regulated by heating or cooling the gas mixture.  In examples, (1) cotton linters or ligno-cellulose are soaked in caustic soda, squeezed, and acted upon with a gaseous mixture of ethylene oxide and methyl chloride, (2) sulphite pulp is soaked in caustic soda, squeezed, and after displacing the air by a current of nitrogen is treated with gaseous ethylene oxide and vinyl chloride, (3) potato starch is treated with caustic soda, centrifuged, and treated with a gaseous mixture of propylene oxide and methyl chloride. Specification 377,657 is referred to.
Patent GB-578676-A (GB)
Title: Improvements in means of speed control of wind driven engines
IPC: F03D7/02
Filed: 1944-03-11
Abstract: 578,676. Wind motors. REDMOND, N. March 11, 1944, No. 4547. Convention date, July 14, 1943. [Class 110 (iii)] The blades 4, 5 of a wind motor carry speedregulating flaps 8 on pivots 9, which divide each flap into unequal parts, as shown. Under excessive speeds of rotation, the flaps turn on their pivots, acting against springs 13, 131 secured to cross bars 1 rigid with the blades. The area of the trailing portion of each flap is between 0.3 and 0.45 of the whole flap area. A weight 17 is attached as shown, or may be attached to the convex face or be distributed between both faces. The weighted rear portion may overbalance the weight of the front portion of each flap. Reference has been directed by the Comptroller to Specification 532,668.
Patent GB-1455737-A (GB)
Title: Acetals
IPC: C07C229/38
Filed: 1974-07-26
Abstract: 1455737 Acetals F HOFFMANN-LA ROCHE & CO AG 26 July 1974 [27 July 1973] 04559/76 Divided out of 1455736 Heading C2C Compounds of the general formula (R<SP>1,2</SP> = alkyl, alkenyl; R<SP>5</SP> = alkyl; A<SP>2</SP> = CF 3 , CN, alkoxycarbonyl, CR<SP>8</SP>R<SP>9</SP>R<SP>13</SP>; R<SP>8,9</SP> = H, alkyl; R<SP>13</SP> = OH, alkoxy, NR<SP>3</SP>R<SP>4</SP>; R<SP>3,4</SP> = H, alkyl, alkanoyl) are prepared by standard methods, e.g. reacting the corresponding substituted benzaldehyde with acrylonitrile or a #-alkoxypropionitrile and R<SP>5</SP>OH in an alkaline medium, The preparation of 2,6-dimethoxy-4-diethoxymethylbenzyl alcohol, α - hydroxy - 3,5 - dimethoxy - p - tolualdehyde and α,3,5 - trimethoxy - ptolualdehyde is described.
Patent GB-1531534-A (GB)
Title: Removal of bod and ammoniacal compounds from waste waters
IPC: C02F3/26
Filed: 1976-02-05
Abstract: 1531534 Purifying waste water AIR PRODUCTS & CHEMICALS Inc 5 Feb 1976 [16 April 1975] 04586/76 Heading C1C Waste water is treated to remove biodegradable carbonaceous material and ammoniacal compounds by successive nitrification (aerobic) and denitrification (anaerobic) processes.
Patent GB-348195-A (GB)
Title: Improvements in or relating to hydrocarbon burners
IPC: H04B1/22
Filed: 1930-02-11
Abstract: 348,195. Electrically igniting burners BRADEN, M. H., 44, Gentian Avenue, Providence, Rhode Island, U.S.A. Feb. 11, 1930, No. 4609. Convention date, Feb. 14, 1929. [Class 75 (iii).] The electrode 63 of an electrically ignited hydrocarbon burner is carried by a tubular porcelain insulating member 55 slidably mounted in a bracket 25 adjustably secured to the burner body 12, a radial slot 59 being provided in the forward end of the member 55 to hold in position the bent electrode point 65 which forms a spark gap in relation to the burner nozzle 15 or a spark point on the burner nozzle. The rear end of the insulator is formed of enlarged diameter to receive a retaining nut 70 on the electrode and a detachable connection between the electrode and a flexible, insulated conductor 83. This connection comprises a threaded sleeve 89 carrying a post 87 fitted with a socket 75 sliding over a post 73 integral with the nut 70 and with spring fingers 79 passing through slots in the socket to engage with a recess 74 in the post 73. The end of the cable portion 90 of the conductor 83 is clamped to a shoulder on the sleeve 89 by the tapered end of the post 87. The spark may ignite the fuel spray either directly or through a pilot gas jet supplied through a tube 43 mounted in the bracket 25 and a bracket 35 also adjustably secured to the body 12. The burner shown is fitted with an adjustable air deflector 54 and is arranged in an air supply tube 10.
Patent GB-143623-A (GB)
Title: Improvements in rotary photogravure printing machines
IPC: B41F9/00
Filed: 1919-02-25
Abstract: 143,623. Pickup, W. Feb. 25, 1919. Intaglio-plate printing; tripping-arrangements.-In a rotary photogravure printing - machine of the kind in which the printing-cylinder is moved by cam and link mechanism out of contact with the impression cylinder throughout every alternate revolution, the sheets are fed between the printing and impression cylinders by a horizontally reciprocating feedtable and, after being printed, pass between a pair of guides to a pair of delivery tapes. The printing-cylinder a is mounted in vertically slidable bearings b to which are pivoted vertical links o engaging two cams m on a driving-shaft n which makes one revolution for every two revolutions of the cylinder a, so that the cylinder a is slightly out of contact with the impression cylinder e throughout every alternate revolution, providing time for the insertion of the sheet between the cylinders a, e and dispensing with the use of grippers. The sheet is laid against guides l on a table h which is reciprocated on rails k by a link y and bell-crank x operated by a cam u on the shaft n, carrying the sheet forward till its front end is just beyond the line of contact of the cylinders a, e. The cylinder a is then raised by the cams m, and the sheet is printed and carried forward between steel guides z, 2 to tapes 3 which deposit the sheet printed-side-up on a delivery board 4. The machine is particularly applicable for printing sheets several times in different colours, the several impressions registering accurately with each other.
Patent GB-829483-A (GB)
Title: Improvements connected with refrigerated tanks
IPC: F25D31/00
Filed: 1956-02-15
Abstract: 829,483. Cooling liquids in bulk. DENISOFF, A. C. Feb. 11, 1957 [Feb. 15, 1956], No. 4696/56. Classes 29 and 64(3) A liquid, e.g. milk, cooling tank 4 has a metal jacket 5 in which is a helical passageway surrounding the tank through which a coolant, e.g. water, is circulated, and there is provided an evaporator or evaporators to cool the coolant in circulation. In a first embodiment the evaporator 3 is located between the tank and jacket to form, between its coils, the helical passageway. The coolant, water, is recirculated through outlet and inlet pipes 8 and 7 and reaches only to a level below the base of the tank. An evaporator may be provided on the floor of the container additionally to cool the water or to cool the water to a predetermined degree when the tank is not in use so that for a limited period chilled water may be circulated without using either evaporator. When only a single evaporator is used it may be located on the floor of the container 6 and surrounded by a helical baffle directing the water from the helical passageway in the jacket around the evaporator coils to the outlet 8. An agitator may be provided in the pan 4. Specification 829,484 is referred to.
Patent GB-634554-A (GB)
Title: Improvements in and relating to gas turbine plants
IPC: F02C3/04
Filed: 1948-02-18
Abstract: 634,554. Gas turbine plant. ENGLISH ELECTRIC CO., Ltd., CHESHIRE, L. J., FRANKEL, A., and WOLFF, P. H. W. Feb. 18, 1948, No. 4707. [Classes 110(i) and 110(iii)] A gas turbine plant comprises a turbine rotor 1, Fig: 3, driving a compressor with axial-flow blading followed by centrifugal blading 15 and a co-axial turbine rotor 2 driving a useful power shaft 36 through a flexible clutch 11. The turbinecompressor rotor assembly is supported on a bearing in the head 30 and a bearing 8. The turbine rotor 2 is overhung on a shaft 10 supported in bearings 9. The stator bladings of the axial flow compressor and the turbines are carried by diametrically divided rings assembled within undivided and flanged casing rings 53, 56. These rings and an intermediate ring part 12 and exhaust conduits 54, 55, Fig. 1, are bolted together to form a rigid assembly. The compressed air passes through a duct 50 to a heat-exchanger 51 and returns to a pair of combustion chambers 62. The combustion products pass .through elbow pieces 52 to the annular turbine inlet. The turbine-compressor assembly is supported solely from the heat-exchanger. The centrifugal compressor discharges through several tangential diffusers 14 which are turned at their ends 16 so as to deliver axially into a chamber enclosed by the casing parts 12, 56. The ducts for the hot working fluid are formed by thin sheet alloy walls 52d, 112, 113 and 54a spaced from the containing casing walls and these walls are lagged internally. The walls of the casing part 12 to which the elbows 52 are flanged have a multiplicity of small passages through which cooling air flows. Cooling air flows also through passages about the bearing 8. The air may be taken from the compressor delivery and further compressed in a booster pump. Oil byepassing the bearing 8 is circulated through other passages at about the same pressure as the cooling air. The rotors 1 and 5 are secured together by splined tubular telescoping shafts 1a, 7c and a tubular bolt 7. Channels are provided to lead cooling air to the bore of the bolt 7 and the space 13 between the turbine rotors. The main nut of the bolt 7 is followed by a lock nut on a thread of smaller diameter and opposite hand.
Patent GB-372424-A (GB)
Title: An improved method for the production of photographic images
IPC: G03C5/22
Filed: 1931-02-14
Abstract: 372,424. Bichromated colloid and like processes. PROJECTOR AKT.-GES., 17, Lowenstrasse, Zurich, Switzerland. Feb. 14, 1931, No. 4770. Convention date, Feb. 14, 1930. [Class 98 (ii).] The parts of a sensitized colloid image hardened to some extent by the exposure are completely hardened after treatment of the exposed layer to moisture (e.g. by warm steam, but without washing out the sensitizer), by subjecting the image layer to dry heat, as by means of a heated roller. Reference is made to Specifications 306,027 and 335,128, [both in Class 98 (ii), Photographic processes &c.].
Patent GB-676959-A (GB)
Title: Improvements in or relating to shock absorbers
IPC: F16F9/26
Filed: 1951-02-28
Abstract: 676,959. Hydraulic shock absorbers. SOC. D'INVENTIONS AERONAUTIQUES ET MECANIQUES S.I.A.M. Feb. 28, 1951 [March 1, 1950], No. 4903/51. Class 108(iii) In an hydraulic shock-absorber of the type in which a piston 3 is movable in an hydraulic cylinder 1, by the action of an oscillating lever 5, the lever 5 is articulated directly on to the piston 3, and a thick rubber ring 9 is in compression between, and bonded to, the piston 3 and wall of the cylinder 1. The arrangement permits the piston to have a slight lateral movement in addition to its normal axial movement. As shown, the piston is pivoted at 4 to the link 5, which itself is pivoted to the cylinder at 6. A head 8 is bolted at 7 to each end of the body 3. Each ring 9 is bonded to a respective liner 10 mounted within the bore of the respective cylinder head 2. The spaces A, B between the piston heads 8 and their respective cylinder heads 2 are connected by a pair of passages not shown each of which houses a spring- loaded piston valve, Fig. 3 (not shown) for damping flow in respective directions between the two spaces A, B. A liquid reservoir (not shown) may be provided.
Patent GB-536709-A (GB)
Title: Improvement in method and apparatus for testing spark plugs
IPC: H01T13/58
Filed: 1940-03-15
Abstract: 536,709. Ignition testing. AERO SPARK PLUG CO., Inc. March 15, 1940, No. 4906. Convention date, April 12, 1939. [Class 7 (iv)] [Also in Group XXXVI] Insulation leakage is detected by noting the heat generated due to leakage current. The secondary winding 6 of a transformer is connected through a mini-ammeter 5 and a neon-tube 4 to the central conductor in the sparking plug insulator 1. Temperature rise is indicated by a thermo-couple 3. An oscillograph 15 may be provided to indicate the character of the defect. The insulator may be dipped in an electrolyte e.g. acetic acid, before testing, whereby fissures in the insulator which would in working be occupied by deposits but are empty, are rendered conductive. The insulator is then wiped dry before testing.
Patent GB-1048533-A (GB)
Title: Method for producing a source of energy or a source of energy and chemicals from an overpressured formation
IPC: E21B49/00
Filed: 1964-02-05
Abstract: 1,048,533. Wells &c. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Feb. 5, 1964 [Feb. 7, 1963], No. 4946/64. Heading E1F. [Also in Division B1] Useful energy is produced through conduits extending from a well penetrating to an overpressured aqueous reservoir located beneath the top of an under compacted shale formation. Hot brine from the reservoir 11 below the shale formation 10 is delivered by tubing 15 to units 20, 22, which remove gas and solids from the brine before it passes to a flash distillation system having stages 24, 26, 31, 32 and in which vapour from a stage passes through the succeeding stage before being discharged as distilled water through the main 30. The pressure of some of the brine is used to drive a turbine 41 and brine from the turbine passes to a flash evaporator 45 to supply steam to drive a turbine 46. The production from the reservoir may contain petroleum material, sulphur, bromine and iodine which may be recovered as by-products of the process. In a modification hot water and steam from the reservoir are fed through a flow restricter controlled from the surface to drive petroleum fluids from an adjacent underground formation.
Patent GB-1371351-A (GB)
Title: Marine loading unloading system
IPC: B63B22/02
Filed: 1972-02-02
Abstract: 1371351 Loading and unloading ships; mooring R H DAVIES 12 April 1972 [29 March 1971 2 Feb 1972] 8046/71 and 4994/72 Headings B7A and B7S [Also in Divisions F2 and B8]  A marine loading and unloading system for transferring fluid cargoes between a seabed pipe-line and a ship comprises a seabed to surface conduit which includes a universal joint connecting rigid pipe lengths. The universal joint allows relative movement of the pipe lengths about one, two or all of three orthogonal axes meeting at a single point.  As illustrated in Fig. 1, the seabed to surface conduit 1 is connected to a mooring buoy 2 by a universal joint 4 and comprises two sections 5 joined by a universal joint 6. The lower end of the conduit 1 is connected through horizontal and vertical swivel joints 27, 28 to a conduit 8 secured to an anchor 11. An adjustable conduit 9 connects with the seabed line 10. The buoy 2 is secured to the anchor 11 by chains 7 which are shorter than the conduit 1 when it is fully extended so that the conduit remains free of strain. The universal joints 4 and 6 are made up of swivel joints similar to the joints 27 and 28. As illustrated in Fig. 7, an articulated pipeline 52 connects a seabed pipe-line 50 to a retrieval buoy 53. The pipe-line can pivot about horizontal and vertical axes at an anchor 51. The pipe-line is supported by floats 70 and includes swivel joints 68 and universal joints 69. The retrieval buoy 53 comprises a polyurethane float 77 and a buoyancy chamber 78 which is normally flooded. The chamber 78 can be pumped out from a tanker so that the retrieval buoy is raised for connection to the tanker. A tanker pipe-line on an extensible boom is bolted to a connector 80 thereafter valves in the connector and the tanker pipe-line are opened. Swivel joints 81 and 82 are included in the retrieval buoy. The tanker is moored to the seabed anchor by a pair of mooring lines bearing marker buoys 97. When not in use, the free ends of the mooring lines are located by a mooring line buoy and a sea drogue, Fig. 18 (not shown).
Patent GB-981864-A (GB)
Title: Improvements in or relating to radar or echo type simulators
Inventor: CUTLER ALBERT ERNEST
IPC: G01S7/40
Filed: 1960-02-12
Abstract: 981, 864. Electric analogue calculating. COMMUNICATIONS PATENTS Ltd. Feb. 8, 1961 [Feb. 12, 1960], No. 5055/60. Heading G4G. [Also in Division H4] A radar simulator (see Division H4) includes arrangements shown in Figs. 5 and 6 for generating periodic electrical time-varying voltage waveforms representing respectively the functions x sin # + y cos #/ct and x cos # - y sin #/ct, where x and y are preset input variables representing the cartesian co-ordinates of the simulated target, Fig. 1 (not shown), # is a continuously varying angle input representing the direction of the aerial beam of the simulated radar, c is a constant and t is the real time variable measured from the start of a waveform recurrence period, said period being equal to the pulse recurrence period of the simulated radar. The two functions are used respectively to evaluate the range of the target and its angular displacement from the aerial beam axis (see Division H4). As shown in Fig. 5 the waveform x sin # + y cos #/ct is generated by applying a parabolic waveform 1/ct from a timebase 11 to an inductive resolver 42 controlled by the # input shaft to give outputs sin #/ct and cos #/ct which are applied to a combining amplifier 54 via rectifiers 52<SP>1</SP>, 53<SP>1</SP> and linear potentiometers 50 and 51 set respectively in accordance with the x and y inputs. As shown in Fig. 6 D.C. voltages x cos #, and y sin # are produced by applying A.C. outputs of amplitudes cos # and sin # from an inductive resolver R1 to respective phase sensitive rectifiers 69, 70 through x and y potentiometers 65, 66 and the resultant voltages are applied to clamp the initial levels of parabolic waveforms 1/ct generated in circuits 71, 72 to give waveforms ct generated in circuits 71, 72 to give outputs x/ct cos #, and y/ct sin # which are combined in amplifier 25 to give the required waveform x cos # - y sin #/ct ; alternatively the A.C. signals x cos # and y sin # are applied to a single phase sensitive rectifier controlling a single 1/ct circuit.
Patent GB-643444-A (GB)
Title: Improvements in or relating to steam engines for locomotives
IPC: F01B23/02
Filed: 1946-02-19
Abstract: 643,444. Va1ve gear for steam locomotives. TOWNSEND, A. J. Feb. 19, 1946, No. 5143. Convention date, Feb. 21, 1945. [Class 122(ii)] [Also in Group XXXI] A control system for regulating steam distribution within the cylinders of a steam locomotive comprises valve means adjustably operative to vary the period of steam admission and the period of steam compression in said cylinders relative to piston stroke and control mechanism adapted for operating the valve means to provide, along with a long admission period, a compression period which is appreciably greater than that which accompanies the shortened admission period normally employed under average running conditions. Such an arrangement reduces the mean effective pressure on the pistons at starting and at low speeds and thus prevents slipping of the wheels. A preferred valve gear is illustrated in Fig. 2 in which the combining lever 57 is connected by a link 59 to the crosshead and the radius rod 48 is connected to the usual link block. The main valve stem 64 is connected to the main valve 66 and a crosshead 65 connected to a pivot 62 on the combining lever 57. The steam inlet 34 opens to the centre of the valve 66 which controls the ports 31 leading to the cylinder 26. Supplementary valve heads 68 control supplementary exhaust ports 39 leading to the exhaust 37. The valve heads 68 are connected by rods 69 that slide in the heads of the main valve 66 and the valve is actuated by a link 75 pivoted to an extension 76 of the combining lever; the link 75 is connected to a crosshead 73 attached to a sleeve 71 which is connected to the valve head 68. In Fig. 11, the curve MX shows the effect of the main valve only on the relationship between compression and cut-off whilst the curve CS shows the overriding effect of the supplementary valve. A locomotive is described having an oversized boiler and auxiliary engines driving the bogey wheels and main engine fitted with the valve gear described. If during drifting of the locomotive, the valve gear is put in reverse and the throttle valve is slightly opened, the positive and negative work is equal and lost motion in the rods is taken up; if the throttle valve is closed, the engine exerts a braking effect on the locomotive.
Patent GB-1400947-A (GB)
Title: Shut-off valve with leak detector
IPC: G01M3/28
Filed: 1973-02-01
Abstract: 1400947 Valves UNITHERM OSTERREICHSCHE GESELLSCHAFT FUR UNIVERSELLE WARMETECHNIK mbH 1 Feb 1973 [4 Feb 1972] 5145/73 Heading F2V In a shut-off valve, a spindle 4 carries an end plate 10 and a spring-loaded closure member 5 which together with a bellows 12 forms a chamber, which chamber, when the valve is closed, communicates via apertures 18 with an annular chamber 15 formed by a pair of concentric seats 14 and thence via passageway 16 to a pressure indicating device whereby reduction in pressure indicates a leakage between the closure member and the seats. One or both of the seats may be formed on the closure member with sealing surfaces provided on the body 1. When the pressure falls below a set limit value an alarm signal may be produced and/or the fluid flow control may be operated.
Patent GB-373174-A (GB)
Title: Improvements in or relating to the refining of low-boiling-point hydrocarbons
IPC: C10G17/06
Filed: 1931-02-18
Abstract: Hydrocarbons of low boiling point are freed from gum-forming constituents by treatment at ordinary temperatures with a polymerizing agent to remove the easily polymerized hydrocarbons, and then heating the oil to remove the remaining polymerizable hydrocarbons.  Crude hydrocarbons such as cracked distillates, shale oil or coke oven benzol, contained in a tank 11 are preferably submitted to a preliminary purification with water or caustic soda in a tank 13, and are then delivered into a mixer 10 together with a small amount of a polymerizing agent admitted from a tank 19. Sulphuric, hydrochloric or acetic acid, dimethyl sulphate or aluminium chloride may be used.  The mixture is discharged into a settling tank 22, and the treated oil is drawn off from a trough 23 surrounding the rim of the tank 22, and is pumped into a digester 25 which contains inert granular material such as coke, pumice or sand, surrounded by a steam-jacket 27. The oil is heated under pressure to a temperature of <PICT:0373174/III/1> 90-180 DEG C., and when polymerization is complete, the oil is discharged into a cooler 31. The oil is washed with caustic soda or water in a tank 34, and is separated from polymerized material in a still 38.  The oil distillate from the condenser 42 is submitted to a final wash with caustic soda in the tank 44. Alternatively the oil is discharged from the cooler 31 into a vessel 49 filled with an adsorbent which removes the polymerized hydrocarbons and sulphur compounds.  Adsorbents such as silica gel, bauxite, fuller's earth, bentonite, charcoal, adsorbent clays, tungsten, aluminium or stannic oxide may be used. The purified oil may then be washed and distilled.  Specification 311,285, [Class 91, Oils &c.], is referred to.