baber/WOPTO huggingface dataset:
Patent GB-668935-A (GB)
Title: Process for the recovery of platinum volatilising during a catalytic process
IPC: B01J23/96
Filed: 1950-02-03
Abstract: Platinum volatilizing from a catalyst during the course of a catalytic process, e.g. the oxidation of ammonia to nitrogen oxides, is trapped on the surface of baffles which offer substantially no resistance to gas flow and are disposed behind the catalyst at a place where a temperature of at least 700 DEG C. prevails, the surface consisting at least in part of a base metal oxide, e.g. an oxide of nickel, chromium, manganese or iron.  The baffles preferably take the form of narrow-mesh wire networks or staggered gratings which support the oxide.  In addition, to effect a substantially complete recovery, networks supporting noble metals, e.g. gold, silver or an alloy of siver with gold, palladium or platinum, are preferably arranged alternately. Alternatively the warp and weft threads of the network may be coated with the metal oxide and the noble metal respectively.  As a further alternative, the network may comprise an alloy containing the base metal and the noble metal which has been surface oxidized to form a discontinuous surface layer of base metal oxide and unoxidized noble metal.  In the case of a gold coating, diffusion of the gold into the metallic core of the network is obviated by interposing a blocking layer, of an oxide or of another metal such as rhodium.  Preferably, a plurality of networks are employed which may be replaced in sequence. Efficiency is improved if the network is electrostatically charged or earthed.
Patent GB-1246164-A (GB)
Title: Power generation apparatus
IPC: F02C6/14
Filed: 1969-01-17
Abstract: 1,246,164. Gas turbine plant. BABCOCKATLANTIQUE. Jan.17, 1969 [Jan.19, 1968], No.2918/69. Heading F1G. [Also in Division F4] The invention relates to a gas turbine power plant which comprises a working fluid circuit having a compressor, a working fluid heater and a turbine, a refrigerating circuit comprising a compressor, a cooler-condenser, a decompression device and a vaporizer, and a circuit for flow of a heat transfer fluid which comprises a tank to contain this fluid in solid-liquid phase balance, and means for causing heat interchange between the heat transfer fluid and the working fluid also between the heat transfer fluid and the refrigerant fluid. The plant shown operates with CO 2  as the working fluid. CO 2  gas enters the compressor C and is compressed therein, the CO 2  then passing through a first inter-cooler A 2  and a second inter-cooler B 2 , the fluid then passing to the HP compressor C 2  where it is further compressed. The fluid then divides, a first portion passing to a pre-heater E and then to a heater O which may be a nuclear reactor. The heated fluid then passes to the turbine T which drives the compressors C 1 , C 2  also an electric generator G. The fluid discharging from the turbine passes through preheater E where it is used to pre-heat the HP fluid. The fluid then passes to a first pre-cooler A 1  and a second pre-cooler B 1 , the cooled fluid then returning to the LP compressor C 1 . The second portion of fluid from the HP compressor C 2  passes through line L controlled by a valve K to a coolercondenser A 3 , the liquid CO 2  then passing through expansion valve D and thence to a separator S and vessel H. The liquid CO 2  then passes through a vapourizer coil V which is immersed in brine in a tank F, the gaseous fluid then returning to vessel H and then through line M controlled by valve N to an intermediate point of the LP compressor C 1 . The brine in the tank becomes cooled and partly solidifies, the liquid brine being circulated in a line controlled by valve R to the precooler B 1  and inter-cooler B 2  . The pre-cooler A 1 , the inter-cooler A 2  and the cooler-condenser As are cooled by circulation of cooling water. At low loads energy is stored in the form of ice in the brine tank, this energy being utilized at peak loads when the ice is returned to liquid form. At low loads the valves K and N are open and valve R closed so that the brine becomes colder and eventually partially freezes. At peak loads, the valves K and N are closed and valve R is opened so that the CO 2  flows wholly in the compressorturbine circuit; also, the liquid brine circulates through the pre-cooler B 1  and inter-cooler B 2  so that maximum pre-cooling and inter-cooling is obtained from the stored frozen brine, the ice gradually returning to the liquid phase.
Patent GB-999902-A (GB)
Title: Improvements in or relating to belt conveyors
Inventor: LOPRESTI ROY FRANK
IPC: B65G21/04
Filed: 1962-01-25
Abstract: 999,902. Endless conveyers. GOODMAN MANUFACTURING CO. Jan. 25, 1962, No. 2929/62. Heading B8A. To minimize belt edge wear of a flexible stranded side-frame belt conveyer, the outer ends of wing rollers 22 are situated at such a height that under all normal conditions of loading, the edges of the belt 18a lie above flexible side ropes 12, 13. Rigid tension members 23 pivotally support shafts 27, 28 of roller assembly 17 and the outer ends of the tension members 23 have upwardly-extending arms 32, 33 rigidly secured to saddles 30 which terminate the members 23 and seat on the flexible ropes 12, 13. Ears 34 at the upper ends of the arms 32, 33 pivotally support the outer ends of the wing roller shafts 27. Lumps of coal fall off the belt fall to the ground and do not lodge between the edges of the belt and the side ropes. Modifications.-Fig. 5 shows a wing roller which is caused to cant in a belt-training aspect by bending ears 40 of a frame member 39 and arranging for ears 34 welded to an upwardlyextending arm 42 to lie parallel to and in line with the bent portions of the ears 40. In Fig. 8, arms 53, 54 are pivoted at 53, 54 and in Fig. 9, roller pivot points 61, 62 are offset and the wing and centre rollers are of different diameters.
Patent GB-613207-A (GB)
Title: Improvements in and relating to the dehydration of gypsum
IPC: C04B11/028
Filed: 1947-01-17
Abstract: In the dehydration of gypsum, a bed of particulate gypsum is maintained in a fluidised state by the upward passage therethrough of a gas at elevated temperature, particulate gypsum being continuously fed to and dehydrated gypsum being continuously removed from the bed and the particulate solids being constrained to flow in a horizontal direction.  The horizontal flow may be effected by arranging the exit or exits for the solid to be remote in a horizontal direction from the inlet or inlets.  The gas may be introduced into the bottom of the vessel through a series of jets or through a perforated plate. Alternatively, a layer or layers of granular material having a weight such that they remain undisplaced by the gas stream may be placed on the perforated bottom.  Preferably the granules of the upper layers are smaller than those of the lower layers.  The particulate gypsum may be contacted successively in separate steps with gas, the temperature of which varies from step to step, either in a series of interconnected vessels through which the solid material flows by gravity, by entrainment in a stream of gas or in a single vessel of elongated horizontal cross-section divided by a number of vertical partitions.  The dehydrating gas may be air or flue gas and may enter the apparatus at a temperature of 230 DEG  C., heating the bed of particulate gypsum to a temperature of 120-140 DEG  C.
Patent GB-1406537-A (GB)
Title: Glazed window or door frame assemblies
IPC: E06B3/58
Filed: 1973-01-20
Abstract: 1406537 Glazing ELTREVA AG 20 Jan 1973 3031/73 Heading EIR A window pane 4 is clamped between a two part frame 1, 2 with its bottom edge engaged on a seating 10 on the first part 1, the parts 1, 2 being interconnected by spaced U sectioned clips 3 having feet 13 retained in an undercut groove 11 in the first part 1, the clips engaging between spaced, parallel flanges 18a, 18b on the second part 2 so as to interlock with the flange 18a nearest to the pane 4 and define an abutment 20 for the free edge of the other flange 18b. The clip's foot 13 may be sheathed in plastics 14 having grooves interlocking with complementary ridges 21 in the groove 11. The seal 7 may be adhesive. The parts 1, 2 and clips 3 are of aluminium.
Patent GB-1402248-A (GB)
Title: Tuyere
IPC: C21B7/16
Filed: 1974-01-23
Abstract: 1402248 Casting composite articles SIEGERLANDER KUPFERWERKE GmbH 23 Jan 1974 [29 Nov 1973] 03117/74 Heading B3F [Also in Division F4] A cooling pipe cast into the nose part of a blast furnace tuyere, slag notch or cooling plate is sheathed by a protective pipe in good thermal contact with it. The cooling pipe 5 may be of copper with a copper sheath 6, or the sheath may be of iron or steel. The coolant flow and return pipes may be sheathed where they are embedded in the tuyere flange. Compressed air may be passed through the pipe 5 during casting of the tuyere.
Patent GB-524565-A (GB)
Title: Improvements relating to regulating arrangements for electrical circuits
IPC: G05F3/06
Filed: 1939-01-30
Abstract: 524,565. Automatic regulation. HARMER, H. M., and CANUT, A. F. Jan. 30, 1939, No. 3126. Addition to 521,314. [Class 38 (iv)] Arrangements according to the parent Specification are modified to obtain a zero or negative internal resistance characteristic and independent of variation of supply voltage over a range of variation of load resistance wherein the resultant reactance of the resonant circuit T 2 , C, which contains a saturated choke, is varying. A D.C. load R, Fig. 3, is supplied through full-wave rectifier A in series or in parallel with full-wave rectifier B is fed with a separate voltage in fixed ratio to and in phase with the supply voltage VS. An A.C. load, R, Fig. 2, is supplied directly, or in series with a separate voltage as aforesaid for example from a transformer Tx. The additional voltage may be obtained by autotransformer or secondary windings associated with the windings T 1 , T 2 . Any desired harmonic of the fundamental frequency may be eliminated by an inductance in series with the condenser C to form a circuit resonant at the harmonic frequency. Similar arrangements may be supplied from each phase of a two- or three-phase supply and their rectified outputs being connected in series.
Patent GB-621855-A (GB)
Title: Improvements in and relating to high frequency discharge apparatus and associated cavity resonator circuits
IPC: H03F3/54
Filed: 1946-02-01
Abstract: 621,855. High-frequency discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 1, 1946, No. 3287. Convention date, Oct. 23, 1942. [Class 39 (i)] High - frequency electron - discharge apparatus comprises a triode valve 1, Figs. 1, 2, concentric annular gridanode and grid-cathode resonators arranged outside the valve envelope, and one or two slots 45, 45<1>, preferably of helical form are cut in the resonator wall connected to the grid to provide feedback so that the device functions as an oscillation generator. The anode 2 is connected to the innermost resonator wall via an adapter 35, and conductor 40 supplies D.C. anode potential. The intermediate resonator wall 26 is connected to the grid disc 7 via a resilient annular member 28 and the outer resonator wall 27 is capacitatively coupled to the cathode 3 via ring 30, annular member 29 and built-in condenser 8, 14, 13. A valve holder 31 is provided, and is associated with valve-supporting ring 33 and threaded member 32 which engages threads on outer surface of member 27. Movable pistons 36, 38 tune the resonators, and power is taken from the grid-anode resonator by loop 42 forming part of the inner conductor of transmission line 44. In the triode valve, anode 2, grid 5 and cathode 3 are all associated with metal discs 6, 7, 8 spaced apart by insulators 11, 12 to which the discs are sealed, and the device as a whole has a " stepwise " configuration. The cathode 3 is indirectly heated and the cathode disc 8 has a skirt 9. The resonators may have a length of an odd multiple of #/4 e.g. 3/4# or 5/4# and the distance of the centre of helical slot or slots 45, 45<1> from either end of the resonators is an integral number of quarter wavelengths. The coupling slot or slots 45, 45<1> extend over a zone covering the position of a voltage maxima in the grid-anode resonator for the range of wavelengths within which the device is designed to operate. When the length of the grid-anode resonator is such that there are a number of voltage maxima along the length of the resonator, two or more slots may be provided separated by a distance equal to an integral number of wavelengths at the operating frequency.
Patent GB-947778-A (GB)
Title: Improvements in or relating to the production of carbamylmethyl phosphorothioates
Inventor: CROUCH ALAN EDGAR
IPC: C07F9/165
Filed: 1959-01-30
Abstract: A thiophosphate ester of the general formula: <FORM:0947778/C2/1> is obtained by reacting together a phosphoro-thiolate salt of the formula: <FORM:0947778/C2/2> with a haloacetamide compound of the formula: <FORM:0947778/C2/3> wherein R1 is methyl, R2 is methyl or other alkyl group containing up to 5 carbon atoms, X1 and X2 are oxygen or sulphur, at least one being sulphur, R3 and R4 are hydrogen, alkyl containing up to 5 carbon atoms, or together with the N atom form a heterocyclic residue e.g. morpholine residue, Y is an alkali metal, alkaline earth metal or ammonium, and Z is chlorine or bromine, the reaction being carried out in a two phase liquid system comprising an aqueous phase and a water-immiscible organic solvent phase, the phosphorothioate salt appearing preferentially in the aqueous phase and the thiophosphate ester appearing preferentially in the solvent phase.  The phosphorothioate salt may be formed in situ by introducing into the reaction the free phosphorothioic acid and an alkaline compound of an alkali metal, alkaline earth metal, or ammonium e.g. a hydroxide, carbonate, or bicarbonate.  The volume ratio of the aqueous phase to the organic solvent phase may vary from 1:4 to 4:1. Specified solvents are ketones, alcohols and ethers having 4 or more carbon atoms, e.g. methyl isobutyl ketone, cyclohexanone, methyl cyclohexanone, 2,2-dichlorodiethyl ether, 3, 5, 5-trimethyl hexanol, and hydrocarbons or halogenated hydrocarbons, e.g. benzene, xylene, chlorobenzene, chloroform and carbon tetrachloride, or mixtures of such solvents.  Preferred reaction temperatures are from 15 to 90 DEG C. Suitable 0, 0-dimethyl phosphorodithioates which may be used as starting material may be obtained by extracting the commercial product with water, separating the oily impurities and neutralising the aqueous extracts with a suitable base or the commercial product may be extracted with aqueous ammonia and the oily impurities separated off.  The pH of the aqueous phase during reaction should preferably be not above 10 and the reaction mixture may be buffered e.g. with bicarbonate ions. Examples are given for the production of O, O-dimethyl -S-(N-methyl) carbamylmethyl phosphorodithioate, O, O-methyl ethyl -S-(N-methyl)-carbamylmethyl phosphoromonothiate and O, O-dimethyl -S-(N-methyl -N-ethyl) carbamoylmethyl phosphorodithioate. Specifications 663,270 and 791,824 are referred to.  Reference has been directed by the Comptroller to Specification 886,319.
Patent GB-1110092-A (GB)
Title: Drive apparatus for a washing and spin-drying machine
IPC: D06F37/36
Filed: 1966-01-25
Abstract: 1,110,092. Friction clutches. CONSTRUCTA-WERKE G.m.b.H. 25 Jan., 1966 [30 March, 1965], No. 3365/66. Heading F2C. [Also in Division D1] A two-speed clutch drive for a washing and spin-drying machine comprises axially aligned inner and outer centrifugal clutch rings 11, 13, respectively keyed to and freely mounted on a sleeve 9 surrounding the main drive-shaft 8 coupled to a pole-changing motor 7, the annular space between the rings 11,13 being closed by a drive disc 18 secured to the end of shaft 8 and carrying spring-loaded clutch operating levers 20 which have friction members 21. For lowspeed drive friction members 21 engage the inner clutch ring 11 so that sleeve 9 rotates at the same speed as shaft 8 and drives the washing drum pulley 3 through a single thin grooved belt 6 or a series of small V-belts, for which the surface of sleeve 9 is formed with a series of circumferential V-grooves 5. When shaft 8 is driven at high speed the friction elements 21 are disengaged from the inner ring 11 and engage the outer ring 13 so that pulley 3 is driven by the single V-belt 16 which engages a pulley 15 integral with clutch ring 13.
Patent GB-285899-A (GB)
Title: Improvements in head-supports for operation-chairs of any kind
IPC: A61G15/12
Filed: 1928-02-02
Abstract: 285,899. Zettel, G. Feb. 25, 1927, [Convention date]. Rests, head.-A head-rest comprises a hollow body a of resilient material having an arched-surface b, the interior of the hollow body communicating with the atmosphere through a hole k, together with a flexible cover f having a beaded edge g to engage the funnel-shaped part h. The member a may be closed at the back by a capsule d.
Patent GB-752229-A (GB)
Title: Improvements in or relating to operator energised mechanical engine starters
IPC: F02N3/02
Filed: 1954-02-04
Abstract: 752,229. Hand or foot turning-gear. RANGER (FERRING), Ltd., E. F., and RANGER, E. F. Feb. 4, 1955 [Feb. 4, 1954], No. 3369/54. Class 7(5) In a hand or foot-actuated starter comprising a sprocket 14, Fig. 1, or a pulley, not shown, conected through a free wheel 15, Fig. 2, to the engine shaft 13, a chain 24, Fig. 1, on a belt, not shown, adapted to engage the sprocket and anchored at one end to a rotatable bobbin 23 which is biased by a spiral spring 26, Fig. 2, to draw the chain in a direction opposite to that in which the drive is effected, an operating member 18, Fig. 1, is secured to the other end of the chain whereby the latter may be moved against the spring bias to rotate the sprocket thereby transmitting a drive through the free wheel to the engine shaft. The engine 10, Fig. 2, is mounted in a carrier which may bes wung about a vertical axis, the carrier comprising an inverted U-shaped member 11 to the central upper part of which a rearwardly extending curved element 12, Fig. 1, is attached. A tubular distance piece 16 welded to the element 12 has a rectangular guide 17 secured thereto. in which the operating member 18 is slidable; the rear end of the latter projects from the guide, and incorporates a handle 19. To a side-plate 20, Fig. 2, of the engine 10 is fixed a spindle 22 on which is the bobbin 23 houses the spring 26 that is connected between the drum and the spindle 22. As shown in Fig. 1, the chain 24 lies clear of the sprocket 14 due to gravity when the starter is inoperative but upon pulling the member 18 outwardly the chain first engages and then rotates the sprocket, at the same time winding up the spring 26; the free wheel 15 comes into action when the engine starts, whereupon the member 18 is returned to the inoperative position, by pushing the handle 19, and the chain is rewound on the bobbin by the action of the spring 26. Specification 744,916 [Group 1] is referred to.
Patent GB-1074983-A (GB)
Title: Improvements relating to machines for cutting gears
Inventor: O JOHN LONG ASH
IPC: B23F9/10
Filed: 1965-01-26
Abstract: 1,074,983. Gear - cuffing. GLEASON WORKS. Jan. 26, 1965, No. 3375/65. Headings B3B and B3K. A gear-cutting or gear-grinding machine comprises a tool-carrying cradle 11, a workhead 17, means for relatively feeding the head and cradle along the cradle axis 12 and for relatively adjusting them about an axis 23 perpendicular to the axes of the work spindle and cradle, along the work-spindle axis 16 and along the perpendicular axis 23, and a slide 18 adjustable perpendicularly to the said perpendicular axis and at right-angles to one of the said axes to enable the latter to be adjusted to intersect, or be offset from, the said perpendicular axis. The machine may cut generated or non-generated spiral bevel or hypoid gears by an intermittent or continuous indexing method with reversing cradle movements. The cutter 13 is mounted for universal adjustment as in Specification 680,104. The machine is similar to that described in Specification 1,074,981. A motor 24, Fig. 2, drives cycle speed change gears 26 and a cradle roll cam 32. The cam acts through an adjustable lever 33 and a connecting rod 34 which is adjustably connected to the cradle to enable the position of the cutter to be set. The cutter is rotated by a separate motor or by the motor 24. The work-spindle 15 is rotated from a shaft 28 through bevel gears 38, 39 and index change gears 41-44 in a housing 45. When the bevel gears 38, 39 are engaged, the work is rotated continuously in the same direction and is fed in and out between the generation of each tooth slot by a cam 51. Backlash is prevented by a brake 52. The cam 32 produces a constant velocity ratio between the rotation of the cradle and work, the ratio being adjusted by the gears 41-44, or by adjusting the drive between the cam 32 and the cradle or both. For cutting non-generated gears, the cradle is locked and the bevel gears 38, 39 are disengaged by raising the shaft 40 to render effective the index mechanism 53. The tooth sides may be cut as surfaces of revolution or as helicoidal surfaces. The spindle may be clamped fast by manually setting a valve 89 to actuate a piston 93 engaging a flange 92 on the spindle. The indexing mechanism 53 is operated by a cam 86 controlling a switch 85 actuating a rack-piston 81 which, through a tensioned chain-drive, oscillates a shaft 40 carrying a plate 54, Fig. 7. In the initial position of the plate 54, a cam 61 engages a pin 72 to hold a locking pawl 68 in its released position, the pawl having been so located by the driving pawl 57 on its reverse swing to the broken line position shown. When the switch 85 is operated, the spindle clamp is released and the pawl 57 is rotated clockwise to the position shown in Fig. 6, when the spindle is again locked in its new position. When the shaft 40 is raised to disengage the gears 38, 39 it also engages a key 65 to connect the shaft 40 to the plate 54. A flange interlock is provided to ensure that the valve 89 is correctly set according to which method of cutting is to be used.
Patent GB-938372-A (GB)
Title: Improvements in or relating to heat exchangers
Inventor: BECKER ERNST LUDWIG
IPC: F16L53/32
Filed: 1959-01-30
Abstract: 938,372. Tubular heat exchange elements; refrigerating. ENGLISH ELECTRIC CO. Ltd. Jan. 29, 1960 [Jan. 30, 1959], No. 3377/59. Classes 29 and 64 (3). A heat-exchanger comprises two tubular elements 11, 12 conveying two heat-exchanging fluids such as vapour and liquid refrigerant in a domestic refrigerator, the tube elements being held in thermal contact over at least a part of their length by a tightly-fitting sheath of non- metallic material, preferably polyvinyl chloride. The sheath may comprise a tape wound tightly around the two tube elements 11, 12 but in the form shown it comprises a preformed tube which is softened, stretched over the elements 11, 12 and allowed to shrink to a tight fit. The sheath may be deformed as e.g. by jaws 14, 15 to fit closely around the elements 11, 12 during drying as shown in Fig. 3. In Fig. 4 the interspaces between the elements 11, 12 and the sheath is filled with a heat-conducting material which may be a liquid, resin or jelly or a mastic compound and may be loaded with a metal powder to increase its heat conductivity. Fig. 5 shows a form in which the tube 11 is deformed to receive the tube 12. Several passes of the tube 12 may be maintained in contact with the tube 11 as shown in Fig. 7. In a further form, the tube 12 may be wound helically around the tube 11a (Fig. 8, not shown).