baber/WOPTO huggingface dataset:
Patent GB-735176-A (GB)
Title: Improvements in and relating to regenerative heat exchangers, especially for combustion turbines
Inventor: HRYNISZAK WALDEMAR
IPC: F28D19/04
Filed: 1952-06-23
Abstract: 735,176. Regenerative heat-exchangers. PARSONS & CO., Ltd., C. A. Sept. 15, 1952 [June 23, 1952], No. 15782/52. Class 64 (1). In a rotary-matrix type regenerative heatexchanger, e.g. an air preheater, in which the rotor is divided by radially extending partitions 3 into sector-shaped compartments each containing regenerative material 4, both the rotor shell and a stationary casing surrounding the rotor are made in two sections 1a, 1b and 12, 13 respectively secured together in a plane extending at right angles to the rotor axis, the rotor shell having annular inlet and outlet openings formed therein to allow the respective heat-exchanging fluids to pass therethrough, bounded by sealing surfaces 2a, 2b which surfaces together with the outer edges of the partitions 3 co-operate in sealing relation with sealing surfaces provided on ducts 7, 8 for the two fluids formed in each of the casing sections 12, 13, these casing sections 12, 13 being made of sheet metal and the rotor shell sections and the ducts 7, 8 being made from ceramics or other sintered materials, e.g. sintered oxides, sintered silicates, sintered carbides, sintered metals or mixtures of any of these. In the form shown, sealing plates 9 made of ceramic material are provided on the periphery of ducts 7, 8, these plates being slidable on sealing surfaces 2a, 2b of -the rotor bounding the annular openings formed therein and on the outer edges of the partitions 3 which extend axially on both sides of the rotor to the level of the sealing surfaces 2a, 2b. Springs 17 at the " cold " end of the heat exchanger maintain the sealing pressure. In each compartment of the rotor the heattransfer material which may comprise wire gauze is carried in a frame 5 space 6 being left to allow for expansion of the matrix. Specification 735,177 is referred to.
Patent GB-925282-A (GB)
Title: Fermentation process for the production of demethyltetracycline
Inventor: VIRGILIO ABRAMO
Filed: 1960-05-04
Abstract: The antibiotic 6-demethyltetracycline is produced by cultivating a 6-demethyltetracycline-producing strain of Streptomyces psammoticus especially s. psammoticus ATCC 14125 in an aqueous nutrient medium, e.g. an aqueous medium pH 4-8 containing a water-soluble carbon source, a source of assimilable nitrogen and essential mineral salts, under aerobic submerged conditions until substantial antibiotic activity is imparted to said medium and recovering the antibiotic thereform.  Preferably cultivation is carried out at 25 DEG -37 DEG C. for 36-120 hrs.  The antibiotic is isolated by acidifying the fermented broth to pH 1.5, filtering, adjusting the filtrate to alkaline pH (pH 8.5-9.0), extracting with a water immiscible aliphatic alcohol of 1-8 carbon atoms, e.g. butanol, extracting the organic phase with a dilute mineral acid, e.g. hydrochloric or sulphuric acid, evaporating the aqueous phase to small volume and adjusting the pH to 5.0 to precipitate 6-demethyltetracycline hydrochloride.
Patent GB-1248889-A (GB)
Title: An electric melting furnace
IPC: H05B7/109
Filed: 1970-04-02
Abstract: 1,248,889. Arc discharge furnaces; electroslag remeltirig furnaces. LEYBOLD-HERAEUS-VERWALTUNG G.m.b.H. 2 April, 1970 [12 April, 1969], No. 15783/70. Heading H5H. In an electric melting furnace with means for continuously weighing the consumable electrode for control purposes, the arrangement is such that the weight measurement is unaffected by movements of the movable power supply cable 26. A platform 4 supports the weight of the electrode and electrode feed means 13, and is in turn supported by the weight-sensitive means, e.g. load cells 3, and the supply cable 26 is connected at one end to and supported by the feed means 13 and is supported at the other end by the platform 4, a flexible conductor 30 being connected between the end of the cable supported by platform 4 and a supply terminal 31. Terminal 31 is fixed at 32 or has a second movable supply cable connecting it to a fixed point, to allow for vertical and horizontal movement of the whole upper furnace part for recharging purposes. Melting may be in vacuo, and is arc discharge melting or electro-slag remelting. German Specification 1,157,739 is referred to.
Patent GB-1320846-A (GB)
Title: Machine for moulding and wrapping portions of predetermined  quantities of a substance of plastic consistency
IPC: B65B25/06
Filed: 1971-05-19
Abstract: 1320846 Wrapping plastic substances KUSTNER FRERES & CIE SA 19 May 1971 [15 July 1970] 15807/71 Heading B8C In a wrapping machine, butter 13 is pressed into circumferentially spaced recesses 7 in a rotatable table 5 so as to displace pistons 8, the displacement being limited by a vertically adjustable upper cam track 15 which engages rollers on the pistons 8 so as to permit variation of the quantity of butter 13 admitted to the receses, and the table 5 is rotated so that the cam track 15 causes the pistons 8 to be advanced to eject the butter into U-shaped conveyer members 11 carrying wrappers 16, the advance of the pistons being limited by a lower cam track 18 which raises the pistons on further rotation of the table 5. The butter is fed from a hopper and through a duct 9 to the recesses 7 by screws 3.
Patent GB-808798-A (GB)
Title: Polyazo dyestuffs
IPC: C09B43/10
Filed: 1957-05-17
Abstract: The invention comprises dyestuffs of formula <FORM:0808798/IV (c)/1> where X is an aryl radicle and 2 is a metal complex forming group. They are made by treating compounds of formula <FORM:0808798/IV (c)/2> with reducing agents such as glucose, arsenious acid or formaldehyde; Z is specified as-COOH, -OH, -OCH3 or -OCH2COOH.  The nitro monoazo starting materials are made by coupling appropriate nitroanilines and pyrazolones.  The products dye cotton and regenerated cellulose in red shades which may be after-coppered. Examples are provided of the preparation of the dyestuffs in which X is phenyl and -(81-sulphonaphthyl-21) and Z is COOH and -OCH2-COOH and their use in dyeing cotton by an after-coppering process.
Patent GB-1461569-A (GB)
Title: Gas separation
IPC: B01D53/047
Filed: 1973-04-03
Abstract: 1461569 Separating gases B O C INTERNATIONAL Ltd 26 March 1974 [3 April 1973] 15843/73 Heading B1L The invention relates to a process for the recovery of a desired component from a gas mixture by passing the mixture through a bed which preferentially absorbs the desired component, wherein in a first stage the gas mixture is introduced at one end of the bed and a mixture with a reduced content of the desired component leaves the other end of the bed and in a subsequent stage a gas mixture having a content of the desired component greater than that of the gas mixture introduced during said first stage is evacuated from the said one end as product gas such subsequent stage being conducted at a lower pressure than that of said first stage, at least part of the gas mixture with a reduced content of the desired component being introduced at the said other end during a latter part only of said subsequent stage so as to promote the evacuation of the desired component.
Patent GB-852252-A (GB)
Title: Improvements in or relating to self oscillating mixing circuits for frequency changing
IPC: H03D7/08
Filed: 1957-05-20
Abstract: 852,252. Frequency changing circuits. TELEFUNKEN G.m.b.H. May 20, 1957 [May 18, 1956], No. 15883/57. Class 40(6). In a self-oscillating mixer in which 'oscillations are generated by connecting a choke Dr in the cathode lead and back-coupling the cathode to a tap on the oscillator circuit O, which is in the anode circuit of the mixer, the signal input circuit E is centre-tapped by means of condensers C 3 ,  4  and the tap earthed. One end of the input circuit E is connected to the grid of the mixer and the other to its cathode via a condenser C N  which is so adjusted that feedback of oscillator voltage to the input circuit via the anode-grid and cathode-grid capacities of the valve is neutralized.
Patent GB-1216777-A (GB)
Title: Improvements in or relating to follow-up mechanism for speed governors
Inventor: KARASEK JAKUB
IPC: F03B15/12
Filed: 1968-04-03
Abstract: 1,216,777. Fluid-pressure servomotor systems. CKD BLANSKO, ZAVODY JIRIHO DIMITROVA NARODNI PODNTK. April 3, 1968, No.15958/68. Heading G3P. In a hydraulic speed control system for a turbine having hydraulic integrial feedback, feedback pressure acts on a piston 2 responsive to turbine speed and an air chamber V is arranged above an oil-filled space O connected with the cylinder 1 containing the speed-responsive piston so that movement of the servomotor-operated feedback piston 10 causes the pressure in the chamber V to change until atmospheric pressure is restored by means of a throttling device Cr. The piston 2 is connected to the control valve 5 of the servomotor and biased by a tension spring 3 against the signal pressure which may be dependent on the speed of a water turbine. In a further embodiment, the feedback piston is connected by a conduit with the space O which communicates through a throttle with oil and air-filled spaces in an annular chamber surrounding it.
Patent GB-1092400-A (GB)
Title: Process for hydrocracking hydrocarbon oils
IPC: C10G47/08
Filed: 1966-04-12
Abstract: Hydrocarbon oils with a boiling range entirely or substantially above 350 DEG  C. are converted into middle distillates by contact at elevated temperature and pressure in the presence of hydrogen with a catalyst containing Ni, W, at least 3.5% F and Al2O3 with a SiO2 content below 5%.  Middle distillates are described as boiling at 160-350 DEG  C. and containing both kerosine and gas oil components. Typical conversion conditions are 50-250 atmospheres of hydrogen at 370-450 DEG  C., with a space velo city of 0.2-5 litres of oil per hour per litre of catalyst and 100-3000 litres of hydrogen per litre of oil.  Examples describe the cracking of a residue obtained by straight distillation of a North-African crude.ALSO:Hydrocracking catalysts are made by impregnating Al2O3 with a SiO2 content of less than 5% with an aqueous solution of a fluoride, a nickel salt and a tungsten salt, drying, calcining and sulphiding the impregnated material. Comparative examples describe the effect of varying the proportions of the constituents of the catalyst.
Patent GB-1395185-A (GB)
Title: Metal casings
IPC: A47B47/03
Filed: 1972-04-20
Abstract: 1395185 Frameworks, cabinets FABRICA ELECTROTECNICA JOSA SA 20 April 1972 16005/72 Headings A4B and A4H [Also in Divisions B8 E1 and F2] A metal casing, e.g. for electric installations, comprises a base-plate 31 mounting at least one closed framework formed from two types of elements A, B of the same height arranged contiguously; A being a rectangular flat plate having its edges folded orthogonally to form flanges with uniformly spaced bores and B being similar but curved at right angles on a transverse axis, the elements being inter-connected by securing elements 13, e.g. screws and nuts or rivets through the bores to form a continuous flange to which a further framework or casing cover or upper baseplate may be fixed. The elements A, B may be of different lengths so that multi-layer frameworks may be built in brick-wall fashion, contacting flanges may have a sealing therebetween and protusions thereon for controlling engagement of the elements. The bores may be L or key-hole slots opening at a flange edge with the screws engaging a threaded bore in the contacting flange. The flat part of the elements may contain openings or press-outs to accomodate e.g. cables and shelves or beams may be supported by the flanges.
Patent GB-1276752-A (GB)
Title: A variable attenuation amplifier
IPC: H03H11/24
Filed: 1970-04-03
Abstract: 1276752 Transistor amplifiers; gain control TEKTRONIX Inc 3 April 1970 [7 April 1969] 16009/70 Heading H3T An amplifying arrangement comprises a first amplifier in the form of a transistor in common emitter connection and a second amplifier in the form of a transistor in common base connection together with switching means for connecting an input terminal alternatively to the first or second amplifier. The embodiment comprises an amplifier of variable gain in which transistor 24 in common base connection is coupled to transistor 50 and transistor 26 in common emitter connection is coupled to transistor 52. The transistors 50, 52 comprise a long-tailed pair, being coupled by resistors 58, 60, 62. With switch 18 closed to contact 20, the gain is a maximum with the input from terminal 16 applied via resistor 28 to transistor 24. With switch 18 closed to contact 22 the gain is reduced, the input from terminal 16 being applied to transistor 26; further reduction of gain may be introduced by means of an attenuator 40. Variable resistor 51 serves for setting the gain of transistor 26 to a predetermined value. The arrangement is followed by a further attenuator 64.
Patent GB-587365-A (GB)
Title: Improvements in or relating to door-closing devices
IPC: E05F3/08
Filed: 1944-08-23
Abstract: 587,365. Door checks ; hinges. SPORRI, K. Aug. 23, 1944, No. 16085. [Classes 65 (i) and 65 (ii)] A door is carried by a hinge member 5 having a screw-threaded pin 6 which engages a fixed socket 2 so that the door rises when opened and closes under its own weight. An extension of the pin 6 is connected to a check piston 8 acting in the usual manner. The door can be held in various open positions by shifting a toothed collar 14, connected to the member 5, into engagement with a lug on the base-plate carrying the socket 2. The rising mechanism and the check may be incorporated in separate hinges.
Patent GB-794468-A (GB)
Title: 9a-halo steroids and process for manufacturing same
IPC: C07J75/00
Filed: 1956-05-24
Abstract: A therapeutic composition contains as the active ingredient a 1,4-pregnadiene of the general formula <FORM:0794468/VI/1> wherein X represents fluorine, chlorine or bromine, R represents =O or =H(b -OH), and R1 represents hydrogen or a hydroxyl group.  The composition may be in the form of a tablet or capsule preferably compounded with sugars, starches, gums, clays, diatomaceous earths and calcium and magnesium carbonates; in the form of aqueous or oily suspensions for injection; or in the form of ointments or creams.
Patent GB-497023-A (GB)
Title: An improved manufacture of photographic material
IPC: G03C1/30
Filed: 1937-06-10
Abstract: Gelatine photographic layers are hardened by means of ketones containing one or more oxy halogen groups but no aldehyde group. Suitable compounds are dioxyacetone, fructose, p-oxybenzoyl carbinol, and mono- and di-chloracetone.  The hardening agent may be incorporated in the gelatine solution or in the emulsion, or the cast layer or the finished developed layer may be treated with a solution of the hardening agent.  In examples: (1) a gelatine solution is mixed with an aqueous solution of dioxyacetone; (2) an aqueous silver halide emulsion containing gelatine is mixed with fructose; (3) an emulsion or gelatine layer is soaked in a solution of dioxyacetone at pH7.
Patent GB-1426430-A (GB)
Title: Automatic cigarette lighter
IPC: F23Q2/28
Filed: 1972-04-07
Abstract: 1426430 Cigarette lighters COLIBRI LIGHTERS Ltd 6 April 1973 [7 April 1972] 16198/72 Heading F4F  A cigarette lighter comprises a piezo-electric ignition mechanism 24 having an operating plunger 25 which is engaged by an undersurface of an actuating member 8 which moves in an aperture 5 in a top wall 4 of the lighter casing and is biased to a rest position in which the aperture is effectively closed, an integral front end 9 of the actuating member 8 forming a cover for the burner 23 and being located thereabove in the rest position and the upper surface of the member 8 being inclined upwardly and rearwardly to a ridge 11 and thereafter rearwardly and downwardly. A gas tank 3 with filling valve 17 is moulded from plastics material and includes pivots 16 for the actuating member 8. The burner includes a gas-outlet valve which is operated by raising the burner by means of a lifting member 22 integral with the actuating member. Operation of member 8 depresses plunger 25 stressing a compression spring until a catch pin 28 for a hammer rides off cam surface 29 so that the hammer is released to strike a piezo-electric crystal. The resultant voltage produces a spark between the burner 23 and an electrode 30 carried by a holder integral with tank 3.
Patent GB-1084874-A (GB)
Title: Improvements in and relating to methods of fastening a moving coil, a diaphragm and a centering member of an electro-acoustic transducer to each other
IPC: H04R9/04
Filed: 1965-04-15
Abstract: 1,084,874. Moving coil transducers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. April 15, 1965 [April 17, 1964], No. 16245/65. Heading H4J. In making a moving-coil transducer a diaphragm 2 and flexible centring member 3 are secured by a connecting sleeve containing deformable and hardenable material to the moving coil 1 by applying axial pressure to the various integers while resisting the radial forces arising as a result of the axial pressure. In manufacture, a lower template 16 is slipped on to a cylindrical jig 12 and the coil 1 is disposed on the jig 12. Output wires 6, 7 are taken upwards. A double-layered paper ring 19 impregnated with phenol-formaldehyde resin is placed in the lower template 16. The flexible centring member 3 is arranged on the frustoconical end 22 of the lower template 16, this member 3 being centred by an integral cylindrical collar 21. The diaphragm 2 is placed on the member 3 and is centred by a similar integral collar 20. Collars 20, 21 are impregnated with resin. A core 13 is next slid into the lower template 16 and jig 12, the lower end 15 serving as a guide. An upper template 17 is slid on to the core 13 and has an end 23 which mates with end 22. Pressure is applied to the upper template whilst the core 13, the lower part of template 17 and the upper part of template 16 are subjected to induction heating. The resin-impregnated ring 19 is softened and collapses and templates 16, 17 move downwards against compression of a spring 18. The distance between end 23 and the upper face of the coil 1 is reduced and the interior space is filled by the collars 20, 21, the ring 19 and the resin, whereupon thermohardening occurs. Heating is then stopped and the transducer assembly is cooled and removed. The ring 19 may be omitted if the collars 20, 21 are sufficiently long. Alternatively the annular space including the ring 19 may be filled with powder, which is subsequently heated and compressed. As a further alternative the sleeve may be made by injection moulding. The output leads 6, 7 are adhered to the diaphragm 2. A central dust protecting cap 8 (Fig. 1, not shown) is subsequently adhered to the inner periphery of the diaphragm 2. The method of manufacture is applicable to microphones and loud-speakers.
Patent GB-292070-A (GB)
Title: Improvements relating to heat exchangers
IPC: F28F27/00
Filed: 1928-06-05
Abstract: 292,070. Compagnie des Surchauffeurs. June 11, 1927, [Convention date]. Levels, regulating.- In a heat-exchanger of the type in which the extent of the heat exchange is regulated by varying the amount of heat transfer surface exposed to both fluids, a movable syphonic take-off pipe g varies the level of liquid in a casing d for one fluid through which tubes a carrying the other fluid pass. The syphon pipe may be counterbalanced by a weight p. Receptacles h ensure that the syphon is kept filled with liquid. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification in which the level is controlled manually by a vertical series of cocks, and another in which the speed of flow of either or both heat exchanging fluids is controlled, e.g. by suitable valves. This subject-matter does not appear in the Specification as accepted.
Patent GB-874186-A (GB)
Title: Shampoo compositions
IPC: C11D1/37
Filed: 1958-05-21
Abstract: A shampoo composition comprises a mixture of (a) at least one salt of a monovalent base with at least one acid having the general formula R[O(CH2)m]nOR1COOH where R is an alkyl or cycloalkyl radical of at least 8 carbon atoms, or an alkaryl radical, or mixtures thereof, R1 is an alkylene group of 1-3 carbon atoms, m is 2 or 3, and n is 1-10; and (b) at least one compound of the general formula R[O(CH2)m]n1X where R and m are as above, n1 is 0-10, and X is -OSO3P or -SO3P wherein P is a monovalent water soluble cation.  (a) may be derived from a fatty alcohol, preferably dodecyl alcohol, or nonylcyclohexanol, and generally comprises 30-70% by weight of the composition, and (b) may variously be an alkyl sulphate, an alkylaryl sulphonate, or a sulphated ethylene oxide adduct of a fatty alcohol, of an alkylphenol or of nonylcyclohexanol.  (a) and (b) are suitably used in the form of sodium potassium, or organic-substituted ammonium salts, for example the isopropanolamine salt.
Patent GB-1524453-A (GB)
Title: Method of cooling theceilling reflector in a nuclear reactor aftershutdown
IPC: G21C15/10
Filed: 1976-04-22
Abstract: 1524453 Reflector shutdown cooling arrangement HOCHTEMPERATUR KERNKRAFTWERK GmbH (HKG) GEMEINSAMES EUROPAISCHES UNTERNEHMEN 22 April 1976 [30 April 1975] 16391/76 Heading G6C A method of cooling the ceiling reflector 4 in a solid-moderated, gas-cooled, high-temperature nuclear reactor after shut-down comprises injecting a cooled gas through some of the fuel element feed pipes 11 and removing the injected gas through the remaining feed pipes 11, so that a flow of cooled gas is established across the ceiling reflector. It is stated that the ceiling reflector is the first part of the reactor to become vulnerable to decay heat, and accordingly the process permits a longer time interval, e.g. for possible minor repairs, before the usual emergency decay heat removal systems are brought into operation. To take into account expansion of the coolant gas fewer feed pipes are used for injection than for removal. The injected gas may be helium, and since cold helium is stated to mix poorly with the hot helium which is the reactor coolant, the ceiling reflector is also protected by a gas blanket.
Patent GB-438211-A (GB)
Title: The manufacture of heterocyclic compounds
Filed: 1934-06-01
Abstract: Heterocyclic compounds of the formula <FORM:0438211/IV/1> wherein X stands for S, O or NH and Y for the group CONH2 or COOH are prepared by the reaction of the corresponding 2-sulphonic acids with salts of hydrocyanic acid.  Reaction at a temperature below 100 DEG  C. leads to the production of carboxyamides, while at higher temperatures carboxylic acid derivatives are formed.  The starting materials are prepared by oxidizing the corresponding 2-mercapto derivatives or treating the corresponding 2-halogen derivatives with an alkali sulphite (cf. Specification 416,291). In an example, benzthiazole-2-sulphonic acid is heated with sodium cyanide at 85--90 DEG  C. to give the 2-carboxylic acid amide; by heating at 130 DEG C. in presence of copper, the 2-carboxylic acid is obtained; by similar means 6.6<1>-dibenzothiazole-2.2<1>-disulphonic acid (prepared by oxidizing 2.2<1>-dimercapto-6.6<1>-dibenzothiazole), benzoxazole-2-sulphonic acid and benzimidazole-2-sulphonic acid are converted to the respective 2-carboxylic acid derivatives.