baber/WOPTO huggingface dataset:
Patent GB-427374-A (GB)
Title: Improvements in water tube steam boilers
IPC: F22B21/34
Filed: 1934-07-02
Abstract: 427,374. Water - tube steam boilers. BABCOCK & WILCOX, Ltd., Babcock House, Farringdon Street, London.-(Assignees of Stillman, T. B. ; 221, Coudert Place, South Orange, New Jersey, U.S.A.) July 2, 1934, No. 19501. Convention date, June 30, 1933. [Class 123 (ii)] A two-drum water-tube boiler comprises a vertical bank of water tubes 14 connecting a lower and an upper drum 11, 13, a partition 21 defining the inner side wall of a laterally adjoining combustion chamber 20 the rear end of which communicates with the tube bank space, a row of radiant heated vertical tubes 23 carrying refractory material defining the outer side wall of the chamber 20 and connecting lower and upper headers 27, 32 which are respectively connected to the lower and upper drums by tube rows 28, 33, forming with refractory material the chamber floor and roof. Burners 36 in the front wall 15 of the chamber provide a horizontal longitudinal flow of heating gases through the chamber and a reverse flow through the tube space to an outlet 40. A bank of looped superheater tubes 43 connecting vertical headers 41, 42 is arranged across the rear of the boiler supported by an extension 39 of the partition 21, and a water tube screen of staggered vertical tubes 48 connecting lower and upper headers 46, 47, is located forwardly of the looped end portions of the superheater. A twin installation may be arranged in a ship's hull with a common central gas exit flue.
Patent GB-593014-A (GB)
Title: Improvements in the production of articles comprising metal
IPC: C23F1/02
Filed: 1945-03-21
Abstract: 593,014. Electric resistances thermocouples. KODAK, Ltd., GRESHAM, D. C., and LOENING, E. E. March 21, 1945, No. 19520/46. Divided out of Complete Specification of 585,035. [Classes 37 and 53] [Also in Group XX] An electric resistance or thermocouple is made by forming a resist stencil as a photographic image of the resistance or thermocouple on an electrically non-conducting support coated all over with a metal layer, removing the metal in the areas not protected by the stencil, and then removing the stencil and reinforcing the metal design so obtained by depositing further metal on the metal so laid bare. The further metal may be the same metal or a different metal such as copper or lead. The non-conducting support may be a cellulose ester such as cellulose acetate, a partially hydrolysed resin such as partially hydrolysed shellac, or glass. Wood or plaster may be first coated with a cellulose ester or hydrolysed shellac layer. In an example, glass is silvered all over and is then coated with bichromated glue. After exposure to a negative image of the desired wire mesh, the unhardened glue is washed out and the glue stencil dried. The silver laid bare is removed in a saturated solution of ferric nitrate in ethyl alcohol, the stencil is removed, further metal such as copper is electro-plated on the silver and the metal is stripped off. A resistance may be formed on a cellulose nitrate support which is then sealed in a glass envelope and the cellulose nitrate electrically fired by means of electrodes protruding through the envelope. A thermocouple may be formed on a cellulose nitrate support by first forming the design for the thermocouple in silver, plating with copper and then with nickel, forming an extra filament on another part of the support, and after securing the thermocouple at one end in a vacuum in a glass envelope passing an electric current through the extra filament to fire the cellulose nitrate. Specification 251,697, [Class 98 (ii)], is referred to.
Patent GB-1179795-A (GB)
Title: Method and apparatus for Removal of Filter Cake from Liquid Filter
IPC: B01D29/39
Filed: 1967-04-28
Abstract: 1,179,795. Liquid filter. SPARKLER MFG. CO. 28 April, 1967 [25 May, 1966], No. 19634/ 67. Heading B1D. A filter comprises a housing containing a plurality of inward-flow woven filter bags 14, each supported by an internal flat hollow member consisting of two perforate metal plates mounted on a filtrate conduit 11 common to all the bags, the bags being shaken relative to their internal supports by flexible strips 17, of aluminium, stainless steel or polyethylene terephthalate, which are threaded through loops 18 on the bags. Strips 17 may be U shaped (Fig. 4, not shown) or pairs of straight strips on opposite sides, and are bolted to bars 28, welded to cross bars 32. As shown, each of two pneumatic cylinders 23, 24 shakes one half of each bag, but the cylinders could each shake a different group of bags. Cylinder rods 25 operate through seals 26, 27. The housing (Fig. 1 not shown) has a valve-controlled air vent 8, a lower inlet (7) which also serves to drain the slurry after a filtering run and a hinged lower cover (5) which is then opened for removal of filter cake when the bags are shaken. Fig. 6, not shown, illustrates how loops 18 may be replaced by a single tunnel, and Fig. 7, not shown illustrates bag shaking by a motor-operated cam shaft.
Patent GB-334165-A (GB)
Title: Improvements in or relating to valve mechanism
IPC: F16K3/26
Filed: 1929-08-24
Abstract: 334,165. Doue, E. E. Aug. 24, 1929. Divided on 332,434, and addition to 316,314. Piston and tubular valves.- In a tap or cock for tanks according to the parent Specification, the body 1 of the tap is secured to the upper part of the tank, the liquid therein flowing by suction and not by gravity. 'The said body 1 has an extension constituted by a fixed tube 1<a> through which a movable tube 3 passes, and in its lowest position nearly reaches to the bottom of the tank, said tube 3 being also provided with two radial holes 9 and having three operative positions, as in the parent case. The three operative positions of the apertures 9 are shown in dotted lines, dot and dash lines, and full lines, corresponding to the closed position, the emptying position, and the open position with reserve of fuel, respectively.
Patent GB-613766-A (GB)
Title: Improvements in the bodies of perambulators or baby cars
IPC: B62B9/12
Filed: 1946-07-02
Abstract: 613,766. Perambulator bodies. HUBNER, A. July 2, 1946, No. 19690. [Class 108 (i)] A perambulator has a body in which metal panels 2 having flanges 3 and 6, form the front, back and base. The panels are fitted so that the flanges 3 and 6 enclose transverse skeleton frames 1a of wood strips, and have secured over them.plywood side-panels 4. The same nails or rivets may be used to secure together side panels 4, metal end panels 2 and frames 1a so that their heads may be suitably covered and a smooth outer surface is obtained.
Patent GB-583159-A (GB)
Title: Improved method of preparing organic disulphides
IPC: C07C329/00
Filed: 1944-10-12
Abstract: Organic disulphides are prepared by oxidising thio-acids containing the structure <FORM:0583159/IV/1> where X is nitrogen, oxygen or sulphur and Y is sulphur or oxygen, by introducing chlorine or bromine as a gaseous oxidising agent into the vapour space above the surface of an aqueous solution of a salt of the thio acid.  The thio-acids include thiocarbonic or thiocarbamic acids containing the structure <FORM:0583159/IV/2> where X is nitrogen having its remaining valencies satisfied by hydrogen or organic radicals, or X is represented by RO or RS where R is an alkyl or cycloalkyl radical, and Y is a doubly-bonded sulphur or oxygen atom.  The gaseous oxidising agent may be added as rapidly as it is absorbed and this is facilitated by stirring but this should not be so vigorous as to splash liquid over the gas inlet employed.  The disulphide separates out as soon as it is formed so an amount of water should be present in sufficient quantity to permit effective stirring.  The oxidation may be carried out satisfactorily at a temperature between 0 DEG  and 50 DEG  C.  When oxidising dithiocarbamates to thiuram sulphides, a buffer is desirably present such as sodium carbonate, borax or sodium hydroxide.  According to Examples (1) chlorine was introduced into the vapour space above a stirred solution of sodium dimethyl dithiocarbamate in aqueous sodium hydroxide until no more particles of disulphide precipitated; the resulting slurry was neutralised and tetramethyl thiuram disulphide filtered off in 97 per cent yield; on repeating with chlorine fed in below the surface, the yield was 56 per cent; (2) in a similar manner, sodium cyclopentamethylene dithiocarbamate, prepared by reacting carbon disulphide with a solution of piperidine in aqueous sodium hydroxide, was oxidised to give dicyclo-pentamethylene thiuram disulphide; (3) sodium diamyl dithiocarbamate, prepared from carbon disulphide and diamylamine in aqueous caustic soda, was oxidised as above, and tetra-amyl thiuram disulphide isolated by solvent extraction of the products with, for example, ether; (4) sodium diethyl dithiocarbamate, prepared from carbon disulphide and diethylamine in aqueous caustic soda, was oxidised to yield tetra-ethyl thiuram disulphide; (5) sodium N-methyl cyclohexyl dithiocarbamate, prepared from carbon disulphide and N-methyl cyclohexylamine in aqueous caustic soda, was oxidised yielding a yellow solid analysing as dimethyl dicyclohexyl thiuram disulphide; (6) to (8) potassium ethyl xanthate was oxidised to yield ethyl xanthic disulphide and potassium amyl- and isopropyl-xanthates to yield the corresponding disulphides; the methods used in each case (4)-(8) being that of (3) above; (9) an aqueous solution of potassium butyl trithiocarbonate was oxidised by means of chlorine in the vapour space and an oil isolated by solvent extraction believed to be butyl trithiocarbonic acid disulphide; (10) similarly an aqueous solution of Bender's salt was oxidised yielding an oil believed to be carbethoxy disulphide.
Patent GB-947165-A (GB)
Title: Improvements in or relating to methods and apparatus for the production of combustible gas
Inventor: MILNER GEOFFREY
IPC: C01B3/46
Filed: 1961-06-01
Abstract: A cyclic process for producing combustible gas by a catalytic reforming of fluid hydrocarbons includes in each cycle a plant-heating period in which a hot gaseous medium is passed in one direction through a bed of catalyst and then through a boiler or vaporizer to raise steam without passing through a regenerator, and further hot gaseous medium is passed in a direction opposite to said one direction through the regenerator to heat the latter without passing through the catalyst material, and a gas-making period in which a gasification medium (e.g. steam which may contain air and CO2) is passed in one direction through the preheated regenerator, mixed with at least one hydrocarbon, and the resulting mixture is passed through the preheated catalyst bed to provide a hot combustible gas which is cooled by passage through the boiler or vaporizer.  The hydrocarbon may be a distillate oil or propane, butane, or a mixture thereof.  The apparatus consists of a catalyst vessel 1 containing a bed of catalyst 2 consisting, for example, of lime or nickel supported on alumina or magnesia, a regenerator vessel 7, a waste-heat boiler 28, a wash-box 38, two stack valves 13 and 36, and a washer-cooler vessel 41.  During the gas-making period both the stack valves are closed and while steam enters vessel 7 at 51, gaseous or liquid hydrocarbon feedstock is fed into the injector 22, the superheated steam and hydrocarbon mix in the upper end of vessel 9 and pass through the catalyst bed 2 where the hydrocarbons are reformed into combustible gas.  The combustible gas passes through the tubes of the boiler 28 to the wash-box 38, and is finally washed and cooled in the vessel 41. At the end of the make-period, the supply of hydrocarbon is stopped and the plant is purged with steam to sweep out the combustible gas into wash-box 38.  For the reverse-flow plant heating, the stack valve 36 is closed and stack valve 13 is opened.  Hot combustion products of fuel and <PICT:0947165/C3/1> air admitted at 15 pass downwardly through heat-storage elements 8 and pass to waste through stack 12.  For the forward-flow plant heating, the stack valve 13 is then closed and stack valve 36 is opened, combustion products from the burner 15 pass through the catalyst bed 1, to the boiler 28, and to waste through the stack 35.  At the end of the forward flow plant-heating period the supply of fuel and air is stopped and steam is passed into vessel 7 at 51 to pass through the plant and discharge at stack 35.  The temperature of the mixture in the make-period is below 1200 DEG C., and the oxygen content of the mixture is preferably below 8% by volume.  An alternative form of the invention describes the forward and reverse flow heating taking place simultaneously with both stack valves open.  In this case the flows are controlled relatively to one another by a throttle valve, e.g. a butterfly valve, in the conduit 11. Specification 947,164 is referred to.
Patent GB-531625-A (GB)
Title: Manufacture of new diazonium compounds
IPC: D06P1/12
Filed: 1939-07-06
Abstract: 531,625. Dye intermediates, dyeing. DU PONT DE NEMOURS & CO., E. I., and ZWILGMEYER, F. July 6, 1939, No. 19749. [Classes 2 (iii) and 15 (ii)] Stable diazonium chlorides are made from 1 - amino - 7 - hydroxy - 8 - phenylazonaphthalenes, in which the phenyl may be substituted, e.g. by alkyl or alkoxy groups or halogen atoms, but is free from carboxylic or sulphonic acid groups, by diazotizing with sodium nitrite in hydrochloric acid, and precipitating the diazonium chlorides by addition of a soluble chloride, e.g. sodium chloride. The preparation of diazonium chlorides from the phenyl, p-tolyl, m- and p-xylyl, 3-methyl-6-methoxyphenyl, and m-chlorphenyl compounds is described in examples. The products may be used for dyeing or printing cellulosic materials, e.g. cotton, by impregnating the material with an arylamide of 2:3-hydroxynaphthoic acid and developing by treatment with a weakly acid developing bath or printing paste containing the diazonium chlorides. Examples of the dyeing and printing of cotton are given. Specification 450,752 is referred to.
Patent GB-691981-A (GB)
Title: Device applicable to vehicle wheels having pneumatic tyres, with a view to enabling the inner tube to be dispensed with
IPC: B60B25/22
Filed: 1950-08-09
Abstract: 691,981. Pneumatic tyres. SERVAES, J. Aug. 9, 1950 [Sept. 19, 1949], No. 19832/50. Class 144 (ii). A tubeless pneumatic tyre comprises an ordinary outer cover 1, with wired edges 8, and separate rubber or like bands 4 having beaded flaps 5 and tapered base-portions 6 which are forced into air-tight engagement with the wheel-rim 2 on inflation of the cover through the valve 10. As shown, the rim has fixed and detachable side-flanges 2<SP>1</SP>, 2<SP>2</SP> respectively.
Patent GB-1014644-A (GB)
Title: Oscillating system, preferably for an electrical time piece
IPC: G04C3/10
Filed: 1962-05-23
Abstract: 1,014,644. Oscillating electric motors. FABRIQUES MOVADO. May 23, 1962 [May 23, 1961], No. 19895/62. Heading H2A. [Also in Divisions F2, G3 and H3] An oscillating motor for a timepiece comprises a torsional elastic oscillator maintained electromagnetically by an arrangement including a transistor 13 with a control coil 11 and a working coil 12 in the control and output circuits thereof, the oscillator carrying permanent magnet means which moves relative to air gaps in flux paths provided by members forming cores respectively of the control coil and the working coil. Two spaced parallel arms 3 form oscillating masses carried by torsion springs 2 of cruciform section. The inertia may be varied by adjusting screws movable in the ends of the arms. Each arm carries at opposite ends magnets 4, 14 respectively having their polar axes aligned with the arms. The two poles of each magnet move close to air gaps 5, 6 in a flux path provided jointly by a member 8, 9 of H-shape, of which there are two arranged between the arms, and an outer member 7 of U-shape of which there are four. The two H-shaped members form cores of the coils 11, 12. Thus the arms are impulsed in opposite phase. The time train is driven through two spring pawls 15 carried by the arms and operating a ratchet wheel 16. These pawls also carry permanent magnets (not shown) whereby the pawls are attracted out of engagement with the ratchet wheel on the return stroke through two further coils 17, 18 which are energized correspondingly with the oscillations. These further coils may be, as shown, in series or parallel with the working coil 12 or in parallel with the control coil 11. In an alternative embodiment, the magnets 4, 14 are arranged with their flux axes parallel to the axes of oscillation and the coils 11, 12 are replaced each by three coils linked one with the H-shaped member and one with each of the two corresponding U-shaped members. In other variants, the arms may carry but one magnet each, or a single arm only may be used thus dispensing with dynamic balance. Specification 1,014,645 is referred to.
Patent GB-858166-A (GB)
Title: Improvements in air compressor systems
IPC: F04B39/06
Filed: 1959-06-10
Abstract: 858,166. Compressors. BENDIX-WESTING- HOUSE AUTOMOTIVE AIR BRAKE CO. June 10, 1959 [Sept. 29, 1958], No. 19906/59. Class 8(1). Antifreeze is forced from a sealed reservoir 40 into the throat of a Venturi 16 in the inlet duct 14 of an air compressor 10 by pressure air from a supercharger 24 which also supplies the compressor inlet. The compressor discharges through a duct 26 to a storage reservoir 28 until at a predetermined pressure a governor 36 allows access of compressed air through a duct 38 to inlet valve unloading means and through a duct 68 to the burner side of a diaphragm 70 to close a normally open valve 64 and so shut off supply of compressed air from the supercharger 24 to both the compressor inlet and the antifreeze reservoir.
Patent GB-224280-A (GB)
Title: Improvements in submarine telegraph systems
IPC: H04L5/06
Filed: 1923-08-03
Abstract: 224,280. Western Electric Co., Ltd., (Western Electric Co., 'Inc.). Aug. 3, 1923. Duplex telegraphs. - A method of signalling over a long continuously loaded submarine cable consists in simultaneously transmitting in opposite directions two trains of signals having different transmission frequencies, one train being transmitted as a series of impulses and received with amplitudes substantially greater than ordinary extraneous disturbances, and the other being transmitted as a modulated wave train and received with amplitudes of the order of, or less than, such disturbances. The cable 1 terminates in duplex bridges having the usual blocking condensers 2, 2<1> and artificial lines 3, 3<1>. At one end is an automatic transmitter 4 which sends direct current signals composed of impulses of a variable length, spacing and polarity, and occupying, a low frequency range. At the other end is a transmitting key 5 for sending wave trains generated by an alternator 6, these signals being, in a higher frequency range of from 75 to 300 cycles per second. The direct current signals are received through a low-pass filter 11, a combined amplifier and shaping network 12, and a recording device 13, the filter 11 eliminating the disturbances created by the transmission of the high frequency signals. Signals sent by the key 5 are received through a transformer 7, a high-pass filter 8 for eliminating low-frequency signals, an amplifier 9 and telephone reeivers 10. Artificial lines.-The artificial lines 3, 3<1> are balanced with particular care for the high and low frequency signals respectively.
Patent GB-1501857-A (GB)
Title: Fluid pressure transducers
IPC: G01L7/08
Filed: 1975-04-25
Abstract: 1501857 Pressure indicators MARSTON EXCELSIOR Ltd 25 April 1975 [7 May 1974] 20011/74 Heading G1L [Also in Division H1] A device for sensing high pressures in chemical equipment or underwater conditions, for example, or for sensing liquid levels in storage tanks, comprises a body 10 containing a snap-action fluidtight domed diaphragm 45 and transducer means operable by inversion of the diaphragm, wherein the diaphragm inversion is non-retractive and the diaphragm is welded between a pair of annular members 47, 48. In a first embodiment Figs. 1 and 2 (not shown) the diaphragm actuates a piston (20) carrying the moving contact (23) of an electric switch (see Division H1). In a second embodiment a piston (40) Fig. 3 (not shown) delivers a fluid-pressure output pulse when the diaphragm inverts. In the embodiment shown in Fig. 4 light from a lamp 54 is reflected on to a photo-electric cell 59 until the diaphragm inverts whereupon the change in output from the cell 59 causes a suitable response by means of electrical circuitry not disclosed.
Patent GB-1533018-A (GB)
Title: Camera exposure control system
IPC: G03B7/083
Filed: 1976-05-14
Abstract: 1533018 Shutter control circuit ASAHI KOGAKU KOGYO KK 14 May 1976 [14 May 1975] 20030/76 Heading G2A [Also in Division H3] A shutter control circuit for SLR cameras comprises a photo-electric circuit PC, T1-4 for generating before exposure a voltage V S  representing exposure time; a D to A converter T6-9, RN1, RN2 for generating a voltage V R  according to the count in a bi-directional counting arrangement CT, SR; a comparator CM for comparing V S  and V R ' and controlling a pulse generator PG to alter the count in order to make V R ' equal to V S ; a memory switch SW M  which opens before exposure to stop pulses reaching the counter so that V R ' stays constant; and a timing circuit Cl, ST, Mg to which, upon shutter opening, V R ' is applied in order to control shutter time. The counting arrangement comprises a three stage reversible counter CT and a reversible shift register SR having an index bit shifted leftwards and rightwards by borrow and carry pulses from the counter CT. This arrangement shortens response time and obviates the need for a decoder. Counter CR and register SR respectively control the values of resistors RN2, RN1 in the D-A converter, detailed in Figs. 2a, b (not shown). The register SR controls shutter time display elements L1-L6. If a balance between V S  and VR is unobtainable, the elements L1-L6 are successively and rapidly lit so that they all appear to be dimly lit. Fig. 3 (not shown) shows an alternative shutter time display arrangement.
Patent GB-716969-A (GB)
Title: Improvements in and relating to woven wire fabrics for paper-making machines
IPC: D21F1/10
Filed: 1951-08-25
Abstract: 716,969. Yarns and threads; wire fabrics; fabrics for papermaking. JOHNSON & SONS, Ltd., C. H., and PATON, A. W. Aug. 6, 1952 [Aug. 25, 1951], No. 20056/51. Classes 120(3) and 142(4) [Also in Groups XXV and VIII] The warp or weft of the wire cloth of a paper-making machine comprises a central strand a, which may be of phosphor bronze, brass, copper, stainless steel or nylon, and a plurality of outer strands c of flattened section the minor axis of which is normal to the central strand.
Patent GB-614096-A (GB)
Title: Improvements in and relating to metallic rectifiers
IPC: H01L21/12
Filed: 1946-07-05
Abstract: An alloy comprising bismuth (40-75 per cent) and cadmium (60-25 per cent) forms the counter electrode of a metal rectifier.
Patent GB-1274406-A (GB)
Title: Roller bearings
IPC: F16C19/36
Filed: 1971-04-19
Abstract: 1,274,406. Bearings. DURKOPPWERKE G.m.b.H. 19 April, 1971 [11 April, 1970], No. 20144/71. Heading F2A. A roller bearing comprises a thin-walled outer race ring with a conical race section 4, a cylindrical section 7, and an inwardly-directed flange 2. Between the two sections there may be included a radially-extending section 6. A plastics injection-moulded comb cage 10 is provided in the region of the cylindrical section 7.