baber/WOPTO huggingface dataset:
Patent GB-1514995-A (GB)
Title: Windmill generation of electricity
IPC: F03D9/02
Filed: 1976-10-19
Abstract: 1514995 Wind motors H LAWSONTANCRED BART 19 July 1976 [17 July 1975 21 July 1975 15 Sept 1975 3 Dec 1975] 29947/75 Heading F1T In a system for generating electric power from wind energy, the energy derived from the wind is accumulated and used to drive a generator at constant power when the amount of accumulated energy exceeds a predetermined value. In the system shown, a 3-bladed, fixed-pitch wind wheel 11 drives four hydraulic gear-pumps 17a-d via step-up gearing 16. A shaft speed transducer 18 controls by-passes on three of the pumps such that at low shaft speed only one pump is operational while the other pumps become operational in turn as the wind speed increases. This ensures that the collective torque of the pumps is roughly proportional to the square of the wind wheel speed. The pumps draw fluid from a head tank 19 and deliver it to an accumulator comprising a cylinder 21 with a weighted piston 22. When the piston rises sufficiently to trip switch 27, a valve 24a is opened to connect the accumulator to a motor 24 driving a mains-energized 5kW induction generator. If the piston continues to rise and trips switch 28, a valve 25a is opened to connect the accumulator to a motor 25 driving a self-energized 25kW induction generator. Valves 25a, 24a are closed when switches 27, 26 are tripped by the piston during its downward movement. At an upper position, the piston trips switch 29 to open a by-pass valve 34 to permit fluid to be dumped back to the header tank via an orifice 35. The 5kW generator may be directly connected to the mains to feed power thereto (via a consumption meter to drive the meter in reverse) whenever the local load is less than 5kW. A brake 36 is actuated at very high wind speeds and in the event of a mains failure, and the blades of the wind wheel may have flaps or spoilers which are extended automatically to limit the speed of the wheel during high winds. In an alternative arrangement a single 30kW generator is used and connected directly to the mains. The power generated can alternatively be stored in batteries or used to generate heat for storage in underground tanks or to effect a chemical reaction such as the electrolysis of water to produce combustible hydrogen gas.
Patent GB-847242-A (GB)
Title: Improvements in or relating to radial flow gas turbines
Inventor: PARKER ROBERT WILLIAM
IPC: F01D9/04
Filed: 1956-12-11
Abstract: 847,242. Turbines. ENGINEERING PRODUCTIONS (CLEVEDON) Ltd. Oct. 7, 1957 [Dec. 11, 1956], No. 37851/56. Class 110 (3). In a radial flow gas turbine, a nozzle unit comprising a pair of spaced coaxial side-rings formed with inclined slots around the facing ring walls and nozzle blades having opposed side edges fitting into registering slots in the respective rings is retained in assembled relationship by separable casing parts of the turbine. A turbine driven supercharger, Fig. 1, has an inward radial flow gas turbine rotor 1 to which gas is supplied by an annular nozzle unit formed by side-rings 6, 7 separated by blades 8 located in slots 9 formed in the facing ring surfaces. Annular channels 2a, 5a are provided in the turbine casing 2 and the shaft casing 5 to locate and retain the nozzle parts in assembled relationship.
Patent GB-625152-A (GB)
Title: Lubricant and process of manufacture
IPC: C08G75/16
Filed: 1946-12-24
Abstract: A lubricant suitable for use in contact with hydrofluoric acid or petroleum derivatives, as in fluid pipe lines, comprises an ethylene polysulphide polymer made by gradually combining a solution of sodium polysulphide having a ratio of Na2S3.5 to Na2S4 with ethylene dichloride at 160 DEG  to 170 DEG  F., to produce a polymeric ethylene polysulphide which is washed with water and then heated to about 380 DEG  to 400 DEG  F., for about 1 1/2 to 2 hours until the desired viscosity is reached.  The sodium polysulphide solution, made from appropriate amounts of sodium sulphide and sulphur, may be emulsified as by adding magnesium chloride and sodium hydroxide solutions thereto before adding the ethylene dichloride, so producing a latex which is coagulated and washed before final heating.  The lubricant may be blended with anthracene oil or the like to adjust its viscosity for special conditions such as extreme cold.ALSO:A lubricant suitable for use in contact with hydrofluoric acid or petroleum derivatives, as in fluid pipe-lines, comprises an ethylene polysulphide polymer made by gradually combining a solution of sodium polysulphide having a ratio of Na2S3,5 to Na2S4 with ethylene dichloride at 160 DEG  to 170 DEG  F., to produce a polymeric ethylene polysulphide which is washed with water and then heated to about 380 DEG  to 400 DEG  F., for about 1 1/2 to 2 hours until the desired viscosity is reached.  The sodium polysulphide solution made from appropriate amounts of sodium sulphide and sulphur, may be emulsified as by adding magnesium chloride and sodium hydroxide solutions thereto before adding the ethylene dichloride, so producing a latex which is coagulated and washed before final heating.  The lubricant may be blended with anthracene oil or the like to adjust its viscosity for special conditions such as extreme cold.
Patent GB-1471389-A (GB)
Title: Method for racemization of optically active amines
IPC: C07B55/00
Filed: 1974-08-30
Abstract: 1471389 Racemization of optically active amines SUMITOMO CHEMICAL CO Ltd 30 Aug 1974 [31 Aug 1973 1 Sept 1973] 38050/74 Heading C2C Optically active amines of the formula wherein R 1  is an alkyl group optionally substituted with an alkoxycarbonyl group or aralkyl or aryl group and R 2  is an alkoxycarbonyl or aryl group, the aryl or aralkyl group optionally being substituted on the aromatic ring by one or more alkyl or alkoxy groups provided that the R 1  and R 2  are always different from each other, are racemized by contacting the amine with a catalyst comprising a complex of an alkali metal and a polycyclic aromatic hydrocarbon. The process may be carried out continuously or in a batchwise manner. Specified catalysts are Li, Na and K naphthalenes or anthracenes. The racemization may be carried out at from about - 10 to 150 C., and in the absence or presence of a solvent. Examples are given which illustrate the racemization of aralkylamines and α-amino acid esters of the above formula.
Patent GB-1013432-A (GB)
Title: Improved process for the preparation of nitrosoamine
Inventor: KOMANDER ALFONS ANSLEM
Filed: 1961-10-25
Abstract: N,N1 - Dinitrosopentamethylenetetramine is prepared by mixing ammonia and a source of nitrous acid in an aqueous medium and adding formaldehyde gradually at a temperature between 15 DEG  and 50 DEG C.  Nitrous acid may be used in up to 50% excess over formaldehyde and ammonia in up to 20% excess over formaldehyde. A surface-active agent may be added to improve the physical form of the product, such as dinaphthylmethanedisulphonic acid. The product may be isolated by filtration and the filtrate re-used in the process.
Patent GB-879032-A (GB)
Title: A method of starting-up and closing-down a once-through forced-flow, vapour generating and superheating unit, and such a unit
IPC: F22G3/00
Filed: 1957-12-09
Abstract: 879,032. Forced-flow steam boilers. DURRWERKE A. G. Dec. 9, 1957 [Dec. 8, 1956], No. 38279/57. Class 123(2) To enable a forced-flow, once-through steam boiler comprising preheating and evaporating sections 22, 23, 24 and an austenitic steel superheater 25 to be started up and closed down without thermal shock damage to the superheater, the boiler has means whereby only superheated steam is admitted to the superheater during these periods. The boiler which is heated by a main burner 27, has additional burners 6, 12 for heating the sections 23, 24 respectively when starting up or shutting down and is provided with three starting lines 4, 10, 17 respectively branching from the tube system at the outlets of the preheater 22, evaporator 23 and superheater 25 and leading to a pressure relieving vessel 19. To start the boiler the feedpump 20 is started and supplies water at minimum load rate and, after a predetermined volume has been supplied, regulators 8, 14 start the burners 27, 6, 12 at minimum load rate. Simultaneously the regulators open the valves 5, 11, 18 respectively controlling the flows in branch lines 4, 10, 17 to settings whereby a major part of the fluid flow is diverted through the branch 4 and a major part of the flow through section 23 is diverted through the branch 10, the remaining part of the flow entering the superheater 25 as superheated steam. When the steam temperature at the superheater inlet 15 reaches the pre-set value the regulator 14 closes the valve 18 sufficiently to pressurize the unit to the desired value. The reduced flow resulting in the sections 23, 24 causes a temperature rise at points 9, 15 to which the regulators respond by gradually closing the valves 5, 11 and the burner valves 7, 13 meanwhile opening the valve 18 at a rate which maintains the pressure at 16 at the superheater inlet constant. The rate at which the valve 18 is opened is reduced if steam is diverted to the turbine for preheating thereof. The reverse procedure is adopted to close down the boiler.
Patent GB-1523875-A (GB)
Title: Supersonic compressors
IPC: F04D29/54
Filed: 1974-09-03
Abstract: 1523875 Supersonic compressors R S DE CHAIR 2 Sept 1975 [3 Sept 1974] 38380/74 Heading F 1C A supersonic compressor comprises an annular array of passages 12, Figs. 1 and 2, each passage being defined between two circumferentiallyspaced side walls 13, 14 and two radially spaced walls 15, 16 so as to afford a throat 35, Fig. 4, and divergent downstream portion 34, the wall 16 extending further upstream than the wall 15  and defining an intake portion of the passage in the form of a supersonic compression ramp which is separated from the adjacent supersonic compression ramp by the side walls 13, 14. As shown in Figs. 1 and 3, the wall 15 has separate upstream portions each extending between side walls 13, 14, contacting the wall 13 along a line 24 and contacting the wall 14 along the boundary edge 25 of the latter. The wall 16 is slightly concave upstream of the lips 18 of the wall 15, thereby forming the supersonic compression ramps which produce an oblique shock wave 31 at each of the front edges 19 of the wall 16. Each shock wave 31 terminates on or just outside the lip 18 and is followed by a fan of shock waves 32. The supersonic compression terminates at a normal shock wave 33 in the divergent passage 34 which follows the throat 35. Thereafter the flow is subsonic. The leading edges 26 of the walls 13, 14 are substantially parallel to the shock wave 31. When the compressor is not operating at its design point and the inlet flow is consequently not parallel to the walls, 13, 14, it is turned into the direction of the walls by an oblique shock wave at one side of each wall and an expansion fan on the other side of each wall. Air not accepted by the compressor spills over the outside of the outer wall 15. To control this spillage, a casing 45, Fig. 8, may be provided to afford a gap 42 outside the lips 18 through which the spillage flows. This casing may extend either upstream, Fig. 6 (not shown), or downstream Fig. 7 (not shown) of the lips 18, or as shown in Fig. 8, both upstream and downstream of the lips Control of the spillage flow is effected in accordance with the pressure difference across the gap 42 by means of a valve in the duct 44 downstream of the gap or, in the case of Fig. 6, by moving the casing towards the lips 18. Boundary layer control slots may be provided in the inner wall 15. The supersonic compressor may comprise either a rotor or a stator, provided that in the latter case it is preceded by means, e.g. compressor stages, for providing the supersonic inflow. The inner and outer walls 16, 15 may be interchanged.
Patent GB-1394290-A (GB)
Title: Method for the growth of synthetic garnet
IPC: C30B29/28
Filed: 1972-08-17
Abstract: 1394290 Preparation of synthetic gallium garnet WESTERN ELECTRIC CO Inc 17 Aug 1972 [18 Aug 1971] 38381/72 Heading C1A [Also in Division B1] Synthetic garnet of the general formula A 2 B 2 B<SP>1</SP> 3 O 12 , where A is at least one rare earth element with atomic number 62-71, B is Ga and/or Sc, B<SP>1</SP> is Ga and O is oxygen and wherein each of the components of the garnet may comprise any excess beyond stoichiometry of up to 7 % by wt., is prepared by exposing a melt of the above components to an oxygen containing atmosphere having a partial pressure of 3À8- 19À4 mm. of Hg for 1-10 hours and subsequently effecting growth of a single crystal by crystal pulling while maintaining the same partial pressure of oxygen. Growth in the described manner has been found to result in the total elimination of dislocations in the single crystal grown. The growth of dislocation free gadolinium gallium garnet and Gd 3 Sc 2 Ga 3 O 12  is exemplified at a preferred partial pressure of oxygen of 15À2 mm. of Hg.
Patent GB-1142737-A (GB)
Title: A combined vhf-uhf tuner
Inventor: TONARI HIROHIKO
IPC: H03J1/08
Filed: 1967-08-21
Abstract: 1,142,737. Toothed gearing. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 20 Sept., 1967 [21 Aug., 1967], No. 38431/67. Heading F2Q. [Also in Divisions H1 and H3] A VHF/UHF tuner has a first manually adjustable shaft which operates the UHF tuning and the VHF fine tuning, the first through a clutch, and a second manually adjustable shaft which operates the VHF channel selector and in one position causes the aforesaid clutch to engage. As shown in Fig. L, the two shafts 24, 26 are concentric, the inner one 24 being connected to the VHF channel selector (not shown) and also carrying a cam with a recess 36a (Fig. 2). In the UHF position of shaft 24, a lip 39a on a lever 39 is urged into this recess by a spring 58, the lever pivoting about a stud 40. A stud 44 on the lever 39 carries a pair of split gears 46, 48 and this motion urges these gears into engagement with a gear 62 to complete the drive to the UHF tuner (see below). The VHF fine-tuning arrangement comprises an eccentric dielectric plate 26c (Fig. 1) positioned between capacitor plates 108 and 106 (see Fig. 5) and secured to, or integral with, the outer shaft 26. UHF tuning.-The shaft 26 carries a pinion 26b which meshes permanently with the split gears 44, 46 on the lever 39, and in the UHF position (see above) rotation of shaft 26 turns the gear 62. To the latter is fastened a friction disc 66 (Fig. 5) whose inclined face passes under a thin elastic disc 76 on the UHF tuning shaft 68. The latter also carries a sector 70 (Fig. 2) and rotation is limited by the sector coming up against a stop 80; further rotation of shaft 26 causes slip between 66 and 76. Indicators (Fig. 5).-A gear 74 on the UHF tuning shaft meshes with a gear 82 loosely mounted on the shaft 26 and fastened to a dial 104 carrying the UHF channel numbers. The fine-tuning knob 32a, which is secured to the shaft 26, has a transparent drum 32c overlapping the dial 104 since these two parts rotate at different speeds. The VHF channel-selector knob 31 is mounted on the shaft 24 and has a second dial 102 carrying the VHF channel numbers and a position " U " in which the UHF tuner is engaged by lever 39. This dial is also overlapped by a transparent drum 32b on the shaft 26. Miscellaneous.-The whole VHF tuner is attached to the frame by resilient lugs 94 engaging in recesses 96 and secured by screws 98a- 98c. Details are given of the method of assembling and disassembling the parts of the VHF and UHF tuners, the elastic disc 76 being accessible through holes in the gear 74. Backlash is prevented by the use of split gears 46, 48 which are urged apart angularly by a spring 50 acting against a stop 54, which is attached to gear 46 and passes through a cut-out portion of gear 48. The idler gear 62 meshes only with gear 46. The VHF tuner is set up on the correct channels by adjustment of a screw 112 which alters the local oscillator frequency.
Patent GB-1188009-A (GB)
Title: Magnetic Proximity Switch.
IPC: H04M1/23
Filed: 1967-08-22
Abstract: 1,188,009. Movable magnet switches. JERVIS B. WEBB CO. 22 Aug., 1967 [23 Aug., 1966], No. 38521/67. Heading H1N. A proximity switch which operates on the approach of a ferromagnetic object 30 to a sensing face 20 of a non-magnetic case 10 has two sensing permanent magnets 26, 28 with opposite poles adjacent the sensing face 20 and two biasing permanent magnets 32, 34 adjacent a magnetic shield 40. Both sets of magnets influence magnetic contacts 24, 25 of a sealed magnetic reed contact unit 22. The shield limits the effect of ferromagnetic material in the member on which the switch may be mounted by bolts passing through bosses 13, 14 (Fig. 2, not shown). The casing compartment 19 may be filled with plastics material or some of the parts may be cemented in place, particularly if the biasing magnets are made adjustable by the provision of a compression spring between them urging them against respective setting screws extending from the casing (Fig. 3, not shown). The sensing magnets 26, 28 may be made of barium ferrite.
Patent GB-1437053-A (GB)
Title: Process of developing silver halide photographic elements
IPC: G03C5/29
Filed: 1974-09-03
Abstract: 1437053 Photographic silver halide development FUJI PHOTO FILM CO Ltd 3 Sept 1974 [3 Sept 1973] 38548/74 Heading G2C Photographic silver halide material in which the silver halide has an average grain size of 0À01-1À5 microns and comprises not less than 90 mole % of silver bromide, 0-5 mole % of silver iodide and 0-5 mole % of silver chloride and which has a gamma value of 2 to 5, is subjected to continuous processing in a roller conveyance processing apparatus having a developing stage, a fixing stage, a washing stage and a drying stage, the development being conducted with an aqueous alkaline solution containing a silver halide developing agent and bromide ions in a concentration of at least 0À09 moles per litre.
Patent GB-1188206-A (GB)
Title: Improvements in or relating to Selective Plating Machines
Inventor: BALDOCK ALFRED JAMES
IPC: B65G49/02
Filed: 1967-08-22
Abstract: 1,188,206. Continuous selective electroplating apparatus. KIRKBY PROCESS & EQUIPMENT Ltd. July 31, 1968 [Aug.22, 1967], No. 38682/ 67. Heading C7B. A selective electro-plating machine has at least one elongated tank 10, through which articles 56 to be plated are passed into one end and out the other, e.g. trailing from a jig 58 which engages on a cathode rail 46 via a grooved wheel 60, and in which are located a pair of weirs 24, 26 adjacent each end 10e, d, at least one weir being adjustable in height whereby the height of electrolyte in the tank between the weirs is controllable by adjusting the weir height so that only part of an article, e.g. an electrical relay contact spring, is electro-plated, e.g. with gold. Electrolyte flowing over the weirs is withdrawn from the end parts of the tank, e.g. via drainage pipes 28, 30 which lead to reservoir 32, and preferably re-circulated e.g. by pump 34 via pipe 36 to the part of the tank between the weirs. Each adjustable weir may include a fixed plate having a slot in its upper edge and an adjustable plate for partly or wholly exposing the slot to adjust the over-flow height. Above the tank and adjacent the rail 46, an endless conveyer chain 52 may be located with pusher dogs 54 thereon which push the articles through the tank.
Patent GB-1243798-A (GB)
Title: Process of beneficiation
Inventor: HUGHES WILLIAM
IPC: C22B34/12
Filed: 1968-08-14
Abstract: 1,243,798. TiO 2  concentrates. BRITISH TITAN Ltd. 14 July, 1969 [14 Aug., 1968], No. 38811/68. Heading C1N. Titaniferous ore containing a substantial quantity of iron oxide is beneficiated by reducing the iron oxide and removing it by leaching the ore; chlorinating the leached ore with Cl 2  gas in presence of a reducing agent so that remaining iron and other chlorinatable impurities are converted to volatile chlorides without any substantial chlorination or loss of TiO 2 , and removing the volatile chlorides from the ore. Reduction may be carried out by heating the ore, e.g. 800-1300‹ C. with a source of carbon, or in a reducing gas, e.g. N 2  or CO, or by sulphiding in presence of oxygen. Leaching may be effected by refluxing with aqueous acid, e.g. HCl, H 2 SO 4 , CH 3 COOH. Chlorination may be carried out at 800-1100‹ C. by passing Cl 2  through a fluidized bed of powdered leached ore and a reducing agent such as coke, the waste gases being cooled to solidify the volatile chlorides formed. Loss of TiO 2  can be prevented by stopping the chlorination while sufficient iron remains in the ore, e.g. 0.2-1% as oxide, to react with any TiCl 4  formed.
Patent GB-1533990-A (GB)
Title: Self service counters for cafeterias and restaurants
IPC: A47J39/02
Filed: 1976-09-15
Abstract: 1533990 Food service counters REGIONAL Mfg CO Ltd 15 Sept 1976 [22 Sept 1975]  38819/75 Heading A4T A self-service food counter unit 1 comprises a well 2 through which hot water is circulated and an open-bottomed unit 3 for supporting a row of food containers (not shown), the containers being supported to slope towards the front of the unit 1. A flange 3a seals against the top of the unit 1, means 5 is provided along which food trays may be slid and the unit may be mounted on castors.
Patent GB-1154088-A (GB)
Title: Plugs or Similar Closing Elements.
Inventor: POLLES ROBERT LE
IPC: G21C17/10
Filed: 1966-08-31
Abstract: 1,154,088. Carrying conductors into casings. COMMISSARIAT A L'ENERGIE ATOMIQUE. 31 Aug., 1966 [9 Sept., 1965], No. 38840/66. Addition to 1,010,124. Heading H2E. A thermocouple support plug similar to that described in the parent Specification is formed as two separate parts 1 and 2 which define between them a chamber 3 which may be filled with brazing material supplied through a duct 9 so as to maintain the thermocouple leads 10 in place. Disc portions 7 and 8 integral with the parts 1 and 2 respectively prevent transverse forces on the leads being transmitted to the brazing zone.
Patent GB-899438-A (GB)
Title: Manufacture from sheet metal of hollow objects
IPC: B21K1/00
Filed: 1959-11-17
Abstract: 899,438. Making projectile shells; forging; cupping. SVENSKA METALLVERKEN A.B. Nov. 17, 1959 [Nov. 17, 1958], No. 38982/59. Classes 83 (2) and 83 (4). A hollow metal article, particularly a projectile, having a closed end of increased wall thickness, is made by forming a sheet metal disc into a cup 26, Fig. 3, and then upsetting the closed end, Figs. 5, 6, to give it the required profile and increase its wall thickness. A disc of copper-plated iron sheet is deep drawn into a preliminary cup 9, Fig. 1 (not shown), further drawn into an intermediate cup 17 and then drawn through a die 24 into the shape 26. The irregular open end is then removed, preferably on a lathe, Fig. 4 (not shown), and the cup is upset in two stages, Figs. 5, 6, in successive dies 33, 39, by respective punches 30, 40. The dies have air vents 35 and the punches have sharpedged grooves into which the metal is pressed to facilitate withdrawal of the workpiece with the punch.