baber/WOPTO huggingface dataset:
Patent GB-441153-A (GB)
Title: Means for delivering a jet or/and dispersed stream or curtain of water
IPC: B05B1/30
Filed: 1934-10-20
Abstract: 441,153. Nozzles; valves. LONGWORTH, J. R., 78, The Crescent, Northwich, Cheshire. Oct. 20, 1934, No. 30082. [Classes 69 (iii) and 135] Apparatus for delivering at will either a regulable et, a dispersed stream or curtain of water, or a combination of the two, comprises a body part a, Fig. 1, attached at one end to a branch band having a tubular extension a<1>. Around the body a is screwed a sleeve C which, on rotation, moves a cross-bar cl engaging a slot in the spindle d2 of a valve d by which the passage through the extension a<1> is regulated. The valve spindle is guided by a central tube carried by a sleeve C having slotted diaphragms through which water may pass. Around the upper end of the member a is a screwed sleeve h<2> connected by a conical part h to an outlet nozzle h<1>. Within the sleeve h<2> just below the conical part h is mounted a rotary impeller g of the form shown in Fig. 7. In the position shown no liquid can pass through the nozzle. On rotating the sleeve C the valve a is opened to give a jet and on rotating the sleeve h<2> the nozzle h<1> is moved away from the extension a<1> to allow liquid sprayed by the impeller g to escape into the nozzle h<1> at a<5>.
Patent GB-1153288-A (GB)
Title: Freezing Box for Liquids and Foodstuffs
Inventor: WENTING HENDRIKUS MARIA
IPC: F25C1/22
Filed: 1966-07-05
Abstract: 1,153,288. Boxes. H. M. WENTING. 5 July, 1966 [6 July, 1965], No. 30097/66. Heading B8P. [Also in Divisions B5 and F4] A box for containing packaged liquids and foodstuffs during freezing comprises a base 1, three side walls 3 secured to the base, a fourth side wall 5 pivoted to the base at 6 and a spring 8 which is secured to wall 5 and may be stretched around the other three walls to close the sides of the box while allowing wall 5 to pivot to accommodate expansion during freezing. The box is open-topped for filling purposes and the walls 3 are formed from a single sheet of stainless steel or plastics.
Patent GB-414346-A (GB)
Title: Method of securing a sheath or casing on to a tubular object, the product of said method and its practical application
IPC: B22D19/04
Filed: 1932-10-27
Abstract: 414,346. Tubes for heat exchangers. DIETERLEN, H., 3, Rue Pierre Ducreux, Paris. Oct. 27, 1932, No. 30204. Void [Abridged as open to inspection under Sect. 91 of the Acts, Oct. 28, 1932]. [Class 64 (iii).] A heat-exchanger, economizer, or boiler tube unit comprises a ribbed tubular member 1 interlocking with a recessed sheath 2, the ribs and recesses being of quadrilateral oross-section. A trapezoidal section may be used, the non- parallel sides of which subtend an angle 2 and intersect at a point 0<11> beyond the axis XX<1> of the tube. Such a construction inhibits the separation of the sheath at high temperatures. The tube may be composed of steel and the sheath of aluminium or the respective metals may have the same expansion coefficients. The sheath may be provided with cooling ribs. In a modification, pieces of metal wire of various cross-sections 9<a>-9<e>, Fig. 14, are welded or soldered onto the tube 1, the sheath 2 being cast over the tube as before.
Patent GB-908788-A (GB)
Title: Substituted 5h-dibenz[b,f]azepines and their 10,11-dihydro derivatives
IPC: C07D/
Filed: 1960-09-02
Abstract: The invention comprises compounds of general formula <FORM:0908788/IV (b)/1> wherein X represents -CH2-CH2-or-CH= CH-; Y and Z represent hydrogen, halogen, or alkyl (1 to 4 carbon atoms); alkylene represents a straight or branched chain with 2-6 carbon atoms; and R represents an alkyl, cycloalkyl or alkenyl group (maximum of 8 carbon atoms each), and processes for their production (1) by reaction of a reactive ester of a hydroxy compound of general formula <FORM:0908788/IV (b)/2> with a primary amine of general formula NH2-R III (2) by reaction of a compound of general formula <FORM:0908788/IV (b)/3> with an aliphatic oxo compound which may be saturated or may contain a double linkage, and reduction of the product, (3) by reduction of a compound of general formula <FORM:0908788/IV (b)/4> wherein alkylene1 and R1 differ from alkylene and R as defined above only in that, in at least one of these radicals, the group bound to a nitrogen atom is a carbonyl group, (4) by splitting into an acid and a secondary amine an amide of general formula <FORM:0908788/IV (b)/5> wherein Ar represents an acyl radical and (5) by catalytic reduction of a compound of general formula <FORM:0908788/IV (b)/6> wherein Av represents an arylmethyl radical.  The products have antiallergic, spasmolytic, anticonvulsive and sedative activity.  Acyl derivatives of general formula V are prepared, for example, by acylation of amines of general formula IV  Acyl derivatives of general formula VI are prepared, for example, by reaction of alkali metal derivatives of compounds of general formula V with reactive esters (such as halides) of low molecular weight alkanols or alkenols; by reaction of compounds of general formula <FORM:0908788/IV (b)/7> with reactive esters of alcohols of general formula <FORM:0908788/IV (b)/8> or by reaction of reactive esters of alcohols of general formula II with amides of general  formula <FORM:0908788/IV (b)/9> Imides reducible to compounds of general formula I are prepared by reaction of appropriate oxo compounds (aldehydes or ketones) with amino compounds of general formula IV.  5-g -Chloropropyldibenz[b,f]azepine is prepared by reaction of g -chloropropyl bromide with the sodium derivative formed by reaction of sodium amide with dibenz[b,f]azepine.
Patent GB-500755-A (GB)
Title: Electron discharge apparatus
IPC: H01J21/02
Filed: 1937-11-05
Abstract: 500,755. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd., and BIELING, C. A. Nov. 5, 1937, No. 30381. Convention date, Nov. 20, 1936. [Class 39 (i)] Discharge apparatus, particularly for generating ultra-high frequenoies of 3000 megacycles or over, comprises a cathode 25, an ionization electrode 16 and an anode 11 in an ionizable atmosphere, the anode being arranged adjacent to, and receiving electrons only through, a perforated or grid-like portion 18 of the electrode 16, the cathode being provided with a screening electrode 20 for confining the discharge between the cathode and electrode 16 to paths in proximity to the perforated portion 18, the distance between portion 18 and the anode being smaller than the mean free path of molecules in the filling. In the form shown the anode is a cup-shaped portion of the envelope and the electrodes 16, 20 are coaxial cylinders supported by flanges resting with interposed insulation on an internal flange 13 of the anode and secured by a locking ring 23. The bottom 17 of the anode, the portion 18 and the emitting surface of the indirectly heated cathode are all parallel. The screen 20 is connected inteinally to the cathode and the ionizing electrode to a positive potential ; electrons produced in the discharge pass through the grid 18 and proceed with uniform high velocities and short transit times to the anode, oscillations being generated as in a diode. A concentric transmission line may have its outer conductor capacitatively coupled to the anode and the inner conductor surrounding the leads to the cathode and ionization electrode. The filling may be argon at 0À1 mm. pressure or a mixture of gases and mercury. The Specification as open to inspection under Sect. 91 includes also similar devices in which no ionizable atmosphere is present the electrode 16 acting merely as an aecelerating electrode. This subject-matter does not appear in the Specification as accepted.
Patent GB-158444-A (GB)
Title: Improvements in exhaust silencers
IPC: F01N1/08
Filed: 1919-12-04
Abstract: 158,444. Nicholls, G. Dec. 4, 1919. Addition to 130,504. Exhaust-silencers.-A silencer as described in the parent Specification is provided with a tapered outlet chamber 17 with an outlet nozzle 17<a> approximately equal in area to the annular outlet 16 from the series of annular conduits. The chamber 17 is attached by screws 12. The end plates 4, 5 comprise concentric members 4a, 4b and 5a, 5b between which the tubes 2, 3 are clamped and held by screws 13.
Patent GB-1361221-A (GB)
Title: Transistor amplifier circuits
IPC: H03K5/1532
Filed: 1971-06-29
Abstract: 1361221 Transistor pulse amplifier KOMBINAT ZENTRONIK VEB 29 June 1971 30405/71 Heading H3T In a transistor amplifier circuit operable to produce an output pulse in response to the occurrence of a peak in an input signal, the output pulse is initiated after the occurrence of a peak in the input signal when the input signal has fallen a predetermined amount below the value of a stored reference voltage representative of that peak and the reference voltage represents a smaller proportion of a higher amplitude peak than a lower amplitude peak so that variations in the time interval between the occurrence of a peak in the input signal and the initiation of an output pulse are at least partly compensated. The amplifier circuit may be used for evaluating play back signals representing binary information from parallel tracks of a magnetizable recording medium. When no input signal is applied a transistor T1 is off and a transistor T2 is on. An amplified and full wave rectified playback signal from a sensing head causes a diode D1 to conduct and a capacitor C1 charges. When maximum charge of C1 is reached its charge decreases in relation to the charging voltage due to the time constant of C1 and the resistance of a non-linear network Z. When the input signal amplitude has fallen by the predetermined amount transistor T1 conducts and Cl discharges via the emitter-collector path of T1. The voltage jump produced at the collector causes transistor T2 to turn off and produce an amplified negative output pulse at A which may be fed to a monostable stage. Without the network Z for a larger amplitude input signal the transistor T 1 tends to conduct sooner than for a smaller amplitude input signal. The network Z results in a delay in the output impulse from T1 which is greater for higher amplitude input signals than for lower amplitude input signals so that in spite of varying input voltages the time interval between the occurrence of a peak in the input signal and the switching off of the transistor T2 is always approximately the same. With a suitable value of R1 it is also possible to obtain overcompensation. The diode D2 limits the input to the transistor T2.
Patent GB-392445-A (GB)
Title: Improvements in electric switches provided with arc quenching means operating upon the expansion principle
IPC: H01H33/75
Filed: 1932-10-29
Abstract: 392,445. Liquid-break switches. SIEMENS-SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Oct. 29, 1932, No. 30426. Convention date, Feb. 25. [Class 38 (v).] A switch in which the arc is extinguished by means operating on the expansion principle, according to which the liquid wherein the arc is struck is confined by a wall surrounding the break gap, and the vapour generated under pressure by the arc is caused to be discharged through expansion apertures opening out into discharge spaces free of liquid, has parts of the surface of the wall directed towards the arc and'located out of the vapour-path through the apertures, but in the vicinity of the arc, and of such character that they retain liquid despite the violent expansion of the vapour which occurs on the said discharge. In this way the retained liquid is vaporized and the vaporization persists through the zero of the A.C. cycle. The retaining means may comprise grooves, or undulations in the wall surface, or the latter may be roughened or formed with small holes, and the liquid may normally fill the arc chamber or be introduced periodically, as during each opening process. As liquids there may be used water or aqueous solutions of, for example, glycols, incombustible inorganic or organic insulating liquids, as triaryl phosphate and carbon tetrachloride. The arc chamber comprises a series of insulating rings, as 30, provided with grooves 52 and threaded on bolts 54 so as to be normally held against one another by springs 43 which are located between a member 39 and a plunger 38 slidable therein. The movable contact 47 in the closed position passes through a fixed contact 41 and depresses a piston 42 having valves 44 which, with a valve 45; permit liquid to flow from the reservoir into the switch chamber 40 when the piston is moved downwards. When the switch is being opened, the piston 42 follows the contact 47 and fills the spaces in the centre of rings 30 with the liquid. When 47 leaves 41 the arc formed vaporizes the liquid until the vapourpressure is enough to separate the. rings, whereupon a sudden discharge of vapour occurs and produces a lowering of the pressure within the chamber. This pressure-drop causes evaptration of the liquid retained in the grooves 52, so that large amounts of relatively cool vapour penetrate the arc, and are discharged, without however disturbing the retained liquid in the grooves. The Specification refers also to a form in which the arc chamber may be open to the atmosphere and the discharge occurs into a partial or complete vacuum, and shows a form in which vertical corrugations are employed.
Patent GB-1432204-A (GB)
Title: System for the combustion of oxidisable constituents in the  waste-air from industrial plants
IPC: F23G7/06
Filed: 1973-06-26
Abstract: 1432204 Burning waste gases BOHLERZENKNERSTROMUNGSTECHNIK GmbH & CO KG 26 June 1973 [26 June 1972] 30442/73 Heading F4B  In a system for burning combustible material in the waste-gas discharged from an industrial installation, e.g. a drying chamber, the gas is passed from discharge ducts 1a ... 1h and common pipe 2 into a combustion chamber 3 where it is blown by a blower 10 over a heat exchange system 4 for preheating prior to burning the material at a burner 5. The resulting hot gases are drawn by a blower 11 through tubes 6 of the exchanger 4 and exhausted through a chimney 7. The position of the blowers 10, 11 is such as to ensure the pressure within the chamber 3 is substantially similar to ambient atmosphere and the flow of gas throughout the chamber is equalized. The blowers may be positioned outside the chamber, of the cross-flow type and have controllable change-pole or D.C. motors to contend with differing rates of gas flow from the installation.
Patent GB-1454874-A (GB)
Title: Flexible laminate for use as a thermal insulation jacket
IPC: F16L59/08
Filed: 1974-07-10
Abstract: 1454874 Laminates JOHNS-MANVILLE CORP 10 July 1974 [16 July 1973 (2)] 30477/74 Heading B5N A flexible laminate 8 for use as a thermal insulation jacket comprises a less than about 0À01 mil thick coating of heat reflective metal 2 on the internal face of a synthetic resin vapour barrier film 1, the metallized face of the vapour barrier film being bonded to a layer of waterproof fibrous material 4 reinforced with a scrim cloth 5 and an exterior layer in the form of a continuous 0À5-4 mils thick film of weatherresistant polymeric resin 7 of halocarbon or acrylic polymer film being bonded to the internal face of the water-proof fibrous material. Film 1 may be of polyethylene terephthalate, polyvinyl chloride, polyvinyl fluoride or copolymers of vinyl chloride and vinylidene chloride, and the metallized face 2, which may be applied by vapour deposition, may be of aluminium, chromium, copper, nickel, silver, gold or an alloy thereof. Fibrous layer 4 may be a glass fibre, ceramic fibre, polyester fibre or nylon net or asbestos paper, the scrim cloth 5 of glass fibres, nylon or polyethylene terephthalate threads, and the film 7 of polyvinyl chloride, polyvinyl fluoride, polymethyl methacrylate or chlorotrifluoroethylene or tetrafluoroethylene polymers. Asbestos paper layer 4 may contain a binder, e.g. a latex of rubber or polyvinyl chloride. The layers may be bonded together using adhesives 3 and 6 which may comprise epoxy resins, vinyl addition polymers, polyalkyl acrylates and synthetic rubbers. Strips of inorganic fibrous mat thermal insulation material, e.g. glass fibres, mineral wool or ceramic fibres, or of flexible polyurethanes foam may be bonded to film 1 by means of an adhesive comprising an epoxy resin, nitrile rubber modified with phenolformaldehyde resin or hot melt adhesives. Two layers of the strips may be provided with an aluminium foil interposed between the layers.
Patent GB-1517815-A (GB)
Title: Method of making an aluminum alloy casting
IPC: F02F1/24
Filed: 1976-07-22
Abstract: 1517815 IC engine valve seats  FORD MOTOR CO Ltd 22 July 1976 [27 Aug 1975] 30505/76 Heading F1B [Also in Division B3]  An A1 alloy valve seat has secured by a casting process (see Division B3) a silicon dust layer 32a to provide a wear resistant surface. The outer portions of the silicon layer may be machined to provide an almost continuous silicon layer.
Patent GB-1402760-A (GB)
Title: Method for producing images
IPC: G03C1/705
Filed: 1972-07-15
Abstract: 1402760 Processes for producing images ENERGY CONVERSION DEVICES Inc 15 July 1972 [15 July 1971] 30569/72 Heading G2C Images are produced by imagewise exposing to high intensity radiant energy a material comprising a support coated with a continuous, solid layer of a substance which causes the substance to melt and soften and, because of its low meltability for the support, form spaced apart globules of the substance about which light can pass. A material capable of reducing the meltability of the support may be provided in an intermediate layer. Specified substances are Te, Se, Pb, Sb 2 S 3 ,Bi and compositions containing Te or Se with at least 60 per cent Te or at least 70 per cent Se. The support is preferably polymeric though glass supports can be used if higher levels exposure are used. Specified radiant energy sources are lasers, flashguns and electron beams. If a layer of gum arabic, optionally with silver nitrate, is applied to the layer, a lower kind of exposure is required. The gum arabic layer may be applied between the support and the sensitive layer but this is less effective. The imagewise exposure may be performed by using a separate original, by typing the original on to the material or by applying a photosensitive layer, such as a vesicular material or an As 2 S 3 /Ag material, to the sensitive layer or the back of the support and forming an image in the photo-sensitive layer using a lower level of exposure than that which effects the globule-forming layer. Lithographic plates may be produced by this process.
Patent GB-684803-A (GB)
Title: Improvements in or relating to thermionic valve amplifier stages of the cathode follower type
Inventor: BARTLETT HUGH FREDERIC
IPC: H03F3/52
Filed: 1950-12-14
Abstract: 684,803. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 13, 1951 [Dec. 14, 1950], No. 30581/50. Class 40 (vi). In a high-power cathode-follower stage V, the control grid is prevented from being accidentally driven positive by providing (1) bias resistance means R1, R2, R3 in the cathode lead to bias the control grid negatively as soon as the bias supply is switched on, (2) high-tension and bias supply smoothing circuits of such timeconstants as to ensure the grid remains negative during the transient periods when the hightension is switched on or, after it is switched off, the grid bias supply is switched off, and (3) a diode D connected between the control grid and earth via delay bias means R6, R7, R8 together with shunt condenser Cl, which provides a conductive path if, during normal operation the control grid of the valve V is driven positive with respect to the cathode.
Patent GB-1464203-A (GB)
Title: Method of shaping a metal sheet of inferior formability
IPC: B21D22/20
Filed: 1975-07-22
Abstract: 1464203 Cupping and spinning at elevated temperatures NISSAN MOTOR CO Ltd 22 July 1975 [22 July 1974] 30581/75 Headings B3Q B3J and B3V A refractory metal sheet, e.g. for a rocket motor chamber, is covered on both sides with a plate of more readily shapable metal, the thus covered sheet being then heated and shaped. Maraging steel, beryllium and titanium alloy sheets 14, Fig. 2, may be spun or cupped in a ring die by the method, using cover plates 28, 28<SP>1</SP> of mild or stainless steel secured together by welding 32, the plate 28 to be engaged by the cupping punch being thinner than the other plate 28<SP>1</SP>. A succession of heating and cupping stages are used after which the casing is removed and the cupped articles machined if required. The blank may be coated with graphite or molybdenum disulfide powder (36), Fig. 3 (not shown), or a spacer 40, Fig. 4, may separate the casing plates 28, 281 leaving a space 42 which is filled with a liquid lubricant or a solid which melts below the temperature to which the assembly is heated for cupping. The spacer 40 may be replaced by a flange on one of the plates. Examples of suitable solids are fats, low m.p. metals, e.g. lead, tin, aluminium and zinc and their alloys and mixtures, and inorganic minerals, e.g. chloride glass, serving as salt baths.  Examples are given of blank holding and punch forces and working temperatures ranging up to 1100‹ C., e.g. 680-880‹ C.
Patent GB-801900-A (GB)
Title: Metallisable monoazo dyestuffs of the benzene-azo-4-hydroxybenzthiazole series
Inventor: LEGG NORMAN
IPC: C09B45/14
Filed: 1955-10-26
Abstract: The invention comprises metallizable dyestuffs of formula <FORM:0801900/IV (c)/1> where X is H, a halogen atom or a phenyl, amino or acetyl-amino group and Y may be substituted which are made by diazotizing an appropriate amine and coupling, preferably in a neutral or faintly alkaline solution, with the benzthiazole component.  Indicated as substituents for Y are alkyl, alkoxy, halogen, trifluoromethyl, acetylamino, alkylsulphonyl and sulphon-alkyl-, -dialkyl-, -hydroxyalkyl- and -dehydroxyalkyl-amides. Specified amines are 2-, 3- and 4-anisidines, 2- and 4-aminophenyl b -hydroxyethyl ethers, aniline, 3-trifluoromethyl-, 2-, 3- and 4-chloro- and 2,5-dichlor- and -dimethoxy - anilines, 4 - aminobenzenesulphon-diethyl- and -dihydroxy - alkyl - amides, 2-methoxyaniline - 5 - ethylsulphone and 3- and 4-aminoacetanilides. Specified coupling components are 4-hydroxyobenzthiazole and its 2-chloro-, -phenyl-, -amino- and -acetylaminoderivatives.  The dyestuffs are applied, preferably in a disperse form, to artificial textile materials, e.g. cellulose esters, polyamides and polyacrylonitriles, in conjunction with a metallization process. Cobalt, nickel, chromium and copper yielding substances are mentioned, the latter being preferred.  Yellow shades are obtained. Examples are provided of the preparation of dyestuffs chosen from the above specified components and their use in dyeing processes, p - aminobenzene - 4 - sulphon - di - (b -hydroxyethyl) amide being the sulphon-di-hydroxyalkylamide used.  Specifications 761,776 and 786,567 are referred to.  In the Provisional Specification X is additionally an alkyl or any aryl or acylamino group. Specifications 777,377, 780,509 and 799,742 also are referred to.
Patent GB-707739-A (GB)
Title: Improvements in the separation of mixtures
Inventor: SCHUTZE MAX
IPC: C10G73/42
Filed: 1952-08-08
Abstract: A mixture of paraffin waxes is fractionated by passing it through a centrifuge having zones at different temperatures and withdrawing the fractions from the centrifuge as they melt.  The temperatures of the inlet and the outlet of the centrifuge are 47 DEG C. and 60 DEG C. respectively, and the fractions are withdrawn from ten points equally spaced between inlet and outlet.