baber/WOPTO huggingface dataset:
Patent GB-944993-A (GB)
Title: Improvements in or relating to microwave ovens
Inventor: TIBBS CHRISTOPHER EVAN MUNDELL
IPC: H05B6/80
Filed: 1960-11-14
Abstract: 944,993. Door operating appliances. RADYNE Ltd. Nov. 13, 1961 [Nov. 14, 196 No. 39038/60. Heading E2M. [Also in Divisions A4 and F4] A microwave food heating unit comprises two (or more, if desired) oven compartments separated by a partition wall 2 and having a single common door 3 held closed, when pulled down, for 30 seconds by an electromagnet 5 while plates of food (one per compartment) placed centrally on the glan floors 7 are heated by microwave energy transmitted through permeable hard glan panels 4 from electronic valve radio frequency generators in upper compartments. These are interchangeable and exchangeable and independently operated by on/off switches 8. When the 30-second period has expired a timing device switches off the electromagnet 5 and the door slides open on its own. At the same time the generators are switched off. If desired each compartment can have its own door and own timing device. Pressing one or both buttons 6 extends the heating period to 45 or 60 seconds, respectively. The lower part 1 of the unit houses watercooled magnetron power units, the cooling water being circulated also to the oven walls and radio-frequency generators.
Patent GB-844797-A (GB)
Title: Improvements in or relating to the production of hydrogen
IPC: C01B3/16
Filed: 1957-12-16
Abstract: <PICT:0844797/III/1> <PICT:0844797/III/2> In the catalytic conversion of carbon monoxide to carbon dioxide by reaction with steam in a synthesis gas which on contact with the catalyst causes a decrease in the activity of the catalyst due to the deposition of oxidisable contaminating material on the catalyst, a fluidised bed of conversion catalyst is employed.  The synthesis gas may be produced by partial combustion of a hydrocarbon, e.g. methane.  The synthesis gas may contain down to 2% of carbon monoxide.  The fluidised bed may contain fixed packing material, e.g. Raschig rings or Berl saddles.  The catalyst may consist essentially of iron oxide admixed with 1-15% of chromium oxide, and may for example contain 83.8% of iron oxide and 10.8% of chromium oxide.  It may have a particle size of less than 80 mesh.  The conversion temperature may be 700-1000 DEG F. and is preferably 800-950 DEG F.  The pressure may be 0-800 p.s.i.g., and is preferably 200-400 p.s.i.g.  The space velocity may be 4-40 cu.ft./hr./lb. of catalyst and is preferably 6-20 cu.ft./hr./lb. The superficial gas velocity through the catalyst may be 0.22 ft./sec., and is preferably 0.4-1.2 ft./sec.  The ratio of steam to carbon monoxide is preferably 3-10.  The fluidised catalyst may be continuously or intermittently withdrawn, regenerated by combustion of the contaminating material, and recycled to the catalytic reaction zone.  The resulting gas may be scrubbed to remove carbon dioxide with for example diethanolamine, acetone, methanol or hot aqueous potassium carbonate solution.  As shown in Fig. 1, a mixture of synthesis gas and steam (origin not shown) is passed into a fluidised bed of catalyst in reaction chamber 20 from a distributer 16.  The spent catalyst is passed from chamber 20 via a valve pipe 22 to a regeneration chamber 25 wherein it is oxidised by air admitted through pipe 28, regeneration product gases passing out through pipe 30, and is conveyed back to reaction chamber 20 by means of steam admitted through pipe 24. The product gas is passed through a cyclone separator 32, whereby entrained catalyst is separated and returned to the fluidised bed, and then through a condenser, water separator, and scrubber (not shown).  The condenser may be used as a heat exchanger to provide part of the steam for the reaction.  As shown in Fig. 2, the reaction chamber 20 contains a fixed bed of packing material, and the fluidised catalyst passes down from reaction chamber 20, through a perforated plate 52 into the regeneration chamber 25 and is conveyed back to chamber 20 via a valved pipe 60 by means of gas admitted through pipe 61.  The regeneration product gas passes upward, through perforated plate 52 and mixes with the synthesis gas being converted.  The product gas passes through a filter 54. Specification 646,532 is referred to.
Patent GB-370033-A (GB)
Title: Improvements in and relating to beryllium steels
IPC: C22C38/00
Filed: 1930-12-30
Abstract: Relates to nitrogenized beryllium steels which may contain nickel or chromium or both.  The steel after chilling from a high temperature is nitrogenized and may be hardened by heating to 400-600 DEG  C.  In an example steels containing 1 per cent of beryllium and 7 per cent of nickel, or 1 per cent of beryllium, 5 per cent of nickel and 12 per cent of chromium, were chilled from 950 DEG  C. and heated for three days in a stream of ammonia at 520 DEG  C.  Steels containing 4 per cent of beryllium only and 1 per cent of beryllium and 12 per cent of manganese are referred to.
Patent GB-1036276-A (GB)
Title: 7,16-dialkyl-pregnanes
Inventor: HEWETT COLIN LESLIE
IPC: C07J7/00
Filed: 1963-10-04
Abstract: The invention comprises steroids of the formula <FORM:1036276/C2/1> (wherein the D 1 and D 6 double bonds are optional and the alkyl groups each have 1 to 4 carbon atoms) and their preparation by (1) reacting a D 6-16a -alkyl-progesterone in which the 20-keto group is protected with an alkyl Grignard reagent to give, after release of the 20-keto group, a 7a ,16a -dialkyl-progesterone into which D 1- and/or D 6-double bonds may be introduced in known manner; or (2) oxidizing a D 5 - 3 - acyloxy - 16a  - alkyl - pregnene to the corresponding 7-keto compound, treating this with an alkyl metal derivative to give the corresponding 7-hydroxy-7-alkyl-steroid and oxidizing and dehydrating this to give a D 4,6-7, 16a  - dialkyl - pregnadiene - 3,20 - dione into which a D 1-double bond may be introduced. In (1) the 20-keto group may be protected as a ketal or by reduction to the 20-ol and the D 1-and D 6-double bonds may be introduced before or after its release.  The D 1-double bond may be introduced chemically with a quinone or selenium dioxide or microbiologically, e.g. with Bacillus sphaericus or Corynebacterium simplex. The D 6-double bond may be introduced with a quinone of oxidation-reduction potential of less than - 0.5 v., it being necessary to use a 7b -alkyl compound (prepared along with the 7a -alkyl compounds in the reaction of the D 6-steroids with an alkyl Grignard reagent at room temperature and separated from them by known methods) in this process.  Reference is also made to simultaneous introduction of D 1- and D 6-double bonds by bromination and dehydrobromination. Examples are given.  D 4,6 - 3 - Keto - 16a  - ethyl - 20 - ethylenedioxy-pregnadiene is prepared by ketalizing 16a -ethyl-pregnenolone acetate to give D 5-3b -acetoxy - 16a  - ethyl - 20 - ethylenedioxy - pregnene, hydrolysing this to D 5-3b -hydroxy-16a -ethyl - 20 - ethylenedioxy - pregnane, converting this by the Oppenauer method to D 4-3-keto-16a -ethyl - 20 - ethylenedioxy - pregnane and refluxing this with chloranil in t-butanol.  Other 20-protected D 4,6 - 3,20 - diketo - 16a  - alkyl - pregnadienes are prepared similarly.
Patent GB-1259885-A (GB)
Title: A method of producing an impressed laminate
Inventor: HINTNER JOHANN
IPC: B29C59/02
Filed: 1969-08-05
Abstract: 1,259,885. Embossing. ISOVOLTA OESTERREICHISCHES ISOLIERSTOFFWERK K.G. H. TURNAUER & CO. 5 Aug., 1969 [6 Aug., 1968], No. 39198/69. Heading B6J. A laminate of resin-impregnated paper is provided with embossed impressions by a pressing operation using as a die a thermoplastic sheet having the desired surface structure on one or both surfaces. An assembly pressed between heated plates comprises outer thermoplastic sheets with the design on their inner surfaces, and between them a plurality of alternating laminates and thermoplastic sheets with the design on both surfaces. Metal foils, e.g. aluminium or copper, may be interposed between the laminates and the thermoplastic sheets, which may be polypropylene or cellulose acetate. The thermoplastic sheets are impressed with the design by pressing between heated plates in contact with one or two sheets having the surface texture to be reproduced.
Patent GB-943275-A (GB)
IPC: A61K31/00
Filed: 1960-11-16
Abstract: 943,275. Dibenz[b,f]azepine 10-ones. J. R. GEIGY A-G. Nov. 16, 1960 [Nov. 16, 1959], No. 39268/60. Heading C2C. The invention comprises compounds of general formula: in which X signifies hydrogen, a halogen atom or an alkyl radical of at most 3 carbon atoms, Y signifies hydrogen, a halogen atom or an alkyl or alkoxy radical of at most three carbon atoms, Z signifies a straight or branched chain alkylene residue containing 2-6 carbon atoms, and Am signifies a dialkylamino group of at most 8 carbon atoms, while one of the two alkyl residues of Am may be combined with the alkylene residue Z or both alkyl residues of Am may be bound together directly or via an oxygen atom or an alkylimino group, their acid-addition and quaternary ammonium salts, and their preparation by hydrolysis of compounds of general formula: The tertiary bases have antiallergic, antiemetic, antispasmodic sedative and narcotic-potentiating activity, and the quaternary ammonium salts are ganglioplegics. Specification 943,276 is referred to.
Patent GB-817030-A (GB)
Title: Improvements in air filters
IPC: B01D46/26
Filed: 1957-12-19
Abstract: 817,030. Air filters. TRUTZSCHLER, H., and TRUTYSCHLER, H. Dec. 19, 1957 [Dec. 31, 1956], No. 39524/57. Class 8(2). An inward flow rotary filter drum 2 suitable for separating cotton dust and fibre from an air stream and from collected fibre is removed by rollers 10, 11 is driven through gearing 3 from an electric motor 14 controlled by means 13 responsive to the pressure drop across the filter whereby a constant thickness of filtering layer may be maintained. In operation dustladen air is forced through a housing inlet 5 and filtered air passes from the interior of the drum 2 to a box 7 and down vertical ducts 6 in which are located a plurality of filter hoses 8 to effect removal of fine particles. Fibres removed from the drum exterior by the rollers 10, 11 falls into a waste box 12.
Patent GB-1477390-A (GB)
Title: Oxygen-fuel lance
IPC: C21C5/46
Filed: 1974-09-11
Abstract: 1477390 Blowing lances; burners BERRY METAL CO 11 Sept 1974 [13 Sept 1973] 39605/74 Headings F4B and F4T In a blowing lance comprising a central fuel pipe surrounded in turn by an insulating pipe, an oxygen supply tube, and flow and return coolant pipes, the nozzle comprises at least one passage extending from the end of the oxygen supply pipe through a coolant chamber, and a fuel supply nozzle leading from the fuel supply pipe and terminating within the passage. A nozzle head member welded to the outer wall 57<SP>1</SP> of the lance forms an end closure 61 and side walls 62 of a coolant chamber, and three convergent divergent oxygen outlet nozzles 70. An extension 65 of the outer wall of the coolant supply passage guides the coolant within the head, and the oxygen passage is closed by a member 69 welded to the extension 24<SP>1</SP> of the oxygen supply tube. The fuel supply pipe 13 and insulating space 15 are closed by member 67, 68, to which are welded fuel nozzles 75, which are supported within the oxygen nozzles 70 by spacers 78, 79. A sliding joint is provided between coolant supply tube 39<SP>1</SP> and its lower extension 64, 65 to allow for thermal expansion. The lance is connected to the coolant, oxygen and fuel supplies through a head similar to that described and claimed in Specification 1,477,389.
Patent GB-856315-A (GB)
Title: Solutions of acrylonitrile polymers
IPC: C08L33/20
Filed: 1958-12-09
Abstract: Polymers containing at least 80% of acrylonitrile and up to 20% of another mono-olefinic monomer copolymerizable therewith are disolved in (1) a solvent consisting of chloral hydrate and a cyclic alkylene carbonate containing 2 to 4 carbon atoms in the alkylene radical, or (2) a solvent consisting of chloral hydrate and succinonitrile or malonointrile, the chloral hydrate in either solvent being employed in a range of 10 to 50% based on the total weight of solvent. Copolymerizable monomers specified are acrylic, methacrylic and chloroacrylic acids, their methyl, ethyl, butyl, methoxymethyl and beta-chloroethyl esters and their amides, vinyl halides, vinylidene chloride, 1-chloro-1-bromoethylene, methacrylonitrile, vinyl alkyl ketones, vinyl acetate, chloroacetate, propionate and stearate, itaconic acid and esters, methylenemalonic esters, diethyl citraconate and mesaconate, vinyl sulphonic acid, styrene, vinyl naphthalene, vinyl pyridines and imidazole and their alkyl, e.g. methyl, derivatives, N-vinyl carbazole, phthalimide and succinimide and vinyl furane.  The polymer used may be a terpolymer e.g. an acrylonitrile/vinyl pyridine or imidazole/vinyl chloride or methacrylonitrile terpolymer; alternatively the polymer may be a blend of two copolymers, e.g. an acrylonitrile/vinyl acetate copolymer blended with an acrylonitrile/vinyl pyridine or imidazole copolymer.  The solutions may be used in the production of films, fibres and related shaped articles.
Patent GB-829212-A (GB)
Title: Improvements in or relating to automatic telephone systems
IPC: H04Q3/62
Filed: 1956-12-31
Abstract: 829,212. Automatic exchange systems. KOMUSIN, E. Dec. 31, 1956 [Dec. 31, 1955], No. 39724/56. Class 40 (4). In a small automatic exchange components such as the speech induction coil and the dial contact spark quenching circuit, which are normally provided in the subset are instead provided in the exchange. Thus in the case of local calls they are provided in a finder-connector link and in the case of a call over a main exchange junction they are provided in the line circuit associated with the junction. As shown, Fig. 1, local calls between subscribers are established by finder connector links such as AS1-LW1, each subscriber being connected to the exchange by six leads of which leads a, b, 1, 2 are individual to the subscriber and leads 3, 4 are common to all subscribers. The induction coil 6 has its secondary winding connected to the subscriber's receiver over common wire 3 and over wire 2 and wiper c of AS1. The transmitter is connected to the primary of the induction coil over wires 1 and 2 and wipers c, d. Spark quenching for the dial contacts is provided by condenser 9 and resistance 12 connected between wipers a and c and hence across wires a and 2. Corresponding arrangements are provided over switch LW1 on the called subscriber's side. Ringing current is provided over wiper b of LW1 wires b and 4 and condenser 10. In the case of a connection to the main exchange, effected over switch AW1, the induction coil 5 is similarly connected and ringing takes place via wires b and 4 and condenser 8.
Patent GB-897486-A (GB)
Title: Improvements in or relating to dust separators
Inventor: GREEN KENNETH DAVID
IPC: B04C3/00
Filed: 1959-11-24
Abstract: 897,486. Centrifugal separators. PRATDANIELS (STROUD) Ltd. Oct. 31, 1960 [Nov. 24, 1959], No. 39875/59. Class 23. In a "straight-through" type cyclone, air discharged with the dust through tangential outlets 15 is returned to the cyclone downstream of the whirl producing vanes 11. The air leaves the dust collecting chamber 16 through a port 20 connected to a secondary separator (not shown) discharging air via ports 21, passages in the vanes, and an outlet 18 to the interior of the cyclone. Some of the air may be returned to the cyclone through ports 19. Air from the chamber 16 may be led to the outlet 18 by a bent pipe. The cyclone may form a cell of a multi-cell cyclone.
Patent GB-857004-A (GB)
Title: Machine-tool
IPC: B23Q5/40
Filed: 1957-12-24
Abstract: 857,004. Drilling-machine details. SOC. GENEVOISE D'INSTRUMENTS DE PHYSIQUE. Dec. 24, 1957 [Sept. 10, 1957], No 40038/57. Class 83 (3). In a machine-tool of the type wherein a member 11 is positioned in two stages, firstly by hydraulic means 13,14, and then by a screw- and-nut gear 15, 16, mechanism 26 is provided to return the nut 16 into its medial position relatively to the screw 15 to avoid jamming of the nut at the ends of the screw arising from a succession of operations of the screw-and-nut gear. As applied to positioning the table 11 of a jig-borer along a path perpendicular to the direction of traverse of the boring-head 12, the screw 15 is on the end of the rod of piston 14, and cylinder 13 is fixed to the machine-bed 10. The nut 16, formed as a bevel-gear, is driven from a shaft 20 by a sliding bevel-gear 19 and bevel-gears 18, the nut 16 and gears 18, 19 moving with the table. A hand-lever 39 controls admission of liquid to the cylinder 13, and the hydraulic traverse, which may be effected at a variable speed, is terminated at a few mm. or a fraction of a mm., short of the desired position, by means which are not described. A reversing electric motor, which may have two speeds in each direction is then started and completes the table traverse by rotating the nut 16 on the screw 15, which is held stationary by the hydraulic system, the motor driving shaft 20 by a worm-gear 22, 23, bevel gears 24 and an electro-magnetic clutch 25. Alternatively, the traverse may be completed by a hand wheel 35, driving the shaft 20 through an electromagnetic clutch 38 which is disengaged automatically and an electromagnetic brake 37 applied when the motor 21 or the hydraulic jack 13, 14, is operative. The return mechanism, operated by depression of a push-button 34 when a warning lamp 33 is illuminated and indicates that the nut is adjacent either end of the screw, consists of bevelgears 26 coupled to the shaft 20 by an electromagnetic clutch 27 and driven by the motor 21 the direction of rotation of which is decided by one or, as illustrated, a pair of cams 28c, 28d, operating switches 31. Operation of the button 34 de-energizes clutch 25 and energizes the clutch 27. The cams, rotated from shaft 20 by gears 30, turn through about 270 degrees as the nut traverses the operative length of the screw, and further cams 28a, 28b are provided to control the warning lamp 33, cam 28a causing intermittent illumination of the lamp when the nut is adjacent the ends of the operative part of the screw, and cam 28b a continuous illumination if the nut reaches the end positions. When the nut reaches the medial position, the cams 28c, 28d de-energize the motor. In a modification, the gears. 22-24 may be duplicated in a different ratio to provide a second speed for the final part of the traverse. The nut may be returned to the medial position automatically by a switch energizing the motor 21, the switch being operated by the hand-lever 39 each time the hydraulic traverse is operated, or by a tachometer driven by the table.
Patent GB-1357642-A (GB)
Title: Hydrostatically operated control apparatus
IPC: F15B7/00
Filed: 1971-08-26
Abstract: 1357642 Hydrostatic steering mechanism DANFOSS AS 26 Aug 1971 [9 Sept 1970] 40038/71 Heading B7H Hydrostatic steering mechanism comprises two control devices 4, 10 connected in parallel to a steering motor 19 and each including a control valve and a control motor actuated by a common steering column, one control device 4 being connected to the column 27 through a slipping clutch 25 which slips if the mechanism is actuated manually so that only one control motor operates and the manual effort required is correspondingly reduced. The control device 4 may be of a larger size than the device 10. As shown the control devices 4, 10 are supplied through non-return valves 3, 9 by respective pumps 1, 7 matched to the size of the control devices but a single pump may supply both devices through a flow divider. Relief valves 22, 23 are connected across the steering motor 19. More than two control devices may be provided.
Patent GB-1155305-A (GB)
Title: Unbalance-Correcting Machines.
IPC: B23Q11/00
Filed: 1966-09-08
Abstract: 1,155,305. Balancing rotary bodies. W. & T. AVERY Ltd. 8 Sept., 1966 [13 Nov., 1965], No. 40095/66. Heading F2U. An unbalance connecting machine comprises a dynamic balance producing a light spot (23), Fig. 2 (not shown), in known manner, indicating the magnitude and direction of unbalance of a body 6, and a machine tool, e.g. a drill 16, having an indicator device 10 producing an illuminated line (22) which, when coincident with the spot (23), indicates that the body 6 is positioned correctly relative to the drill 16 for drilling to commence, and also indicates the magnitude of the balance correction which subsequently takes place. Two rotary field emitter and receiver systems 1, 2 may be jointly switched in at 3, and electrically separated by switch 4, emitter a rotating in synchronism with the body 6 and receiver b started rotating in synchronism only at low speeds, e.g. by controller 7, the system 2 also rotating in synchronism when switch 4 is closed. Receivers b, c are respectively coupled with a slotted mask 8, and a cam plate 10 having an edge 11. The emitter d is coupled to the drill feed 14 when contact switch 15 is closed, signifying engagement of the drill 16 with the body 6, to engage coupling 12. With switch 3 open the body 6 is rotated to produce spot (23) indicating the unbalance magnitude and direction in the dynamic balance machine. The machine is then stopped but, before body 6 ceases to rotate, switches 3 and 4 are closed so that emitter a and receivers b and c rotate in synchronism therewith. The mask 8, and its slot 9, and the cam plate 10 thus rotate in synchronism, the slot 9 and edge 11, together with a light source (21), forming an illuminated line (22). The body 6 is then brought into its balance correcting position, e.g. by manually rotating the body, indicated by the line (22) passing through the centre of spot (23), and the switch 4 is opened to electrically separate the systems 1 and 2. The drill is then advanced until it touches the body 6, when switches 15 close to engage coupling 12 and to rotate emitter d. Receiver c is then rotated in synchronism causing edge 11 to cut across the illuminated line from slot 9 and hence covering the illuminated line (22) from its radially inner end outwardly. The correct amount of material has been removed when the line (22) is covered to a point coincident with the centre of the spot (23), at which point, such covering may produce a control impulse to terminate drilling. Alternatively, drilling may be terminated manually.
Patent GB-1292274-A (GB)
Title: Carbon filaments
Inventor: EVANS CYRIL GEORGE
IPC: D01F11/12
Filed: 1968-08-22
Abstract: 1292274 Carbon filaments JOHN HEATHCOAT & CO Ltd 24 Nov 1969 [22 Aug 1968] 40169/68 Heading C1A A carbon filament is made by subjecting a carbon-containing filament to heat treatment to graphitize the filament in a furnace containing an atmosphere of inert gas and a metal adsorbable by the filament and vaporizable at graphitizing temperatures. The heat treatment is effected by passing an electric current through the filament at a voltage sufficient to cause graphitization. The inert gas is preferably argon and the metal is preferably zinc. In a preferred embodiment a polyacrylonitrile filament is heated at from 230‹ to 330‹ C. to produce a black colour in the filament, the filament is then enclosed together with an inert gas and an electro-negative metal and then heated to 600‹ C., whereby the filament becomes a resistance heater which is graphitized by the passage of an electric current therethrough. The filament may be kept under tension whilst being subjected to heating. The graphitization may be performed by high frequency induction. Suitable metals are all the alkali metals, certain Group II metals, i.e. Mg, Ca, Ba, Zn and Cd, lead in Group IV and tellurium in Group VI of the Mendeleev table.