baber/WOPTO huggingface dataset:
Patent TW-202305039-A (TW)
Title: Photosensitive resin composition, method for producing cured relief pattern and semiconductor device
Inventor: YORISUE TOMOHIRO
IPC: C08G73/22
Filed: 2017-03-30
Abstract: To provide a photosensitive resin composition that gives a resin layer having high adhesion with no voids occurring at an interface of a Cu layer in contact with a cured photosensitive resin layer, after a high temperature storage test, and a method of forming a cured relief pattern using the photosensitive resin composition, and a semiconductor device having the cured relief pattern. A photosensitive resin composition gives a cured film with the occurrence of voids prevented at an interface in contact with a Cu layer, after a high temperature storage test, by containing a cyclic compound having a carbonyl group in a photosensitive resin composition of a specific structure.
Patent TW-202337286-A (TW)
Title: Wiring board
Inventor: FURUTANI TOSHIKI
IPC: H05K3/46
Filed: 2022-11-02
Abstract: To provide a wiring board having high versatility in wiring design. A wiring board of an embodiment, includes: a first insulating layer 111; a first conductor layer 112 having a plurality of first conductor pads P1 and a plurality of second conductor pads P2; a second insulating layer 110 having an open 110b through which the plurality of second conductor pads P2 expose; and a wiring structure WS arranged in the open 110b. The wiring structure WS includes: a first face comprising a plurality of first face side connection pads OP; and a second face comprising a second face side connection pad IP on the side opposite to the first face. The plurality of first face side connection pads OP constitute a component mounting face including a first component mounting region and a second component mounting region. A part of the first face side connection pads OP and a part of the second face side connection pad IP in the first and second component mounting regions are connected to each other, the second face side connection pad IP and each second conductor pad P2 are electrically connected to each other, and the second face side connection pad IP and each first face side connection pad OP are electrically connected to each other.
Patent TW-202328301-A (TW)
Inventor: PARK JUN-HYOUNG
IPC: C08G77/12
Filed: 2022-11-10
Abstract: 本申請案旨在提供一種固化組成物，所述固化組成物形成具有適當釋放剝離力及殘餘黏合比的固化產物，並在不需要藉由熱或能量射線進行的固化製程的情況下使形成壓敏黏著劑層的壓敏黏著劑組成物固化。
Patent UA-42502-A (UA)
Title: Method for preventing failure of intestinal anastomosis
Inventor: ROTAR OLEKSANDR VASYLIOVYCH
Filed: 2001-03-20
Abstract: The method for preventing the failure of the intestinal anastomosis comprises the self-supporting respiration and the increased oxygen partial pressure in the cells of the anastomosis. The improvement of the oxygen diffusion from the blood to the anastomosis tissues is attained by the single intravenous administration of Perfuorane and the simultaneous continuous dropwise administration of Dopamine into the opposite vein at a dose of 1-3 ig/kg/min. The physical state of the patient is assessed beforehand. When only hemoglobin content decreases, the dose of Perfuorane is 5-15 ml/kg. When the decreased hemoglobin content is accompanied by the decrease in the systolic arterial pressure, the dose of Perfuorane is 15-30 ml/kg.
Patent UA-41187-A (UA)
Title: A PROCESS OF synthesis of diamond (variants)
Inventor: Minchenko Hryhorii Vasyliovych
Filed: 2001-03-23
Abstract: Inventions relate to the production of synthetic superhard materials and can be used for the synthesis of diamond at high temperature and pressure. A process of synthesis of diamond is carried out at high temperature and pressure of the reaction composition containing carbon-containing material and catalyst. Additives are introduced to the peripheral part of reaction composition, such additives as calcites and/or oxides at an amount to provide the specific resistance exceeding by 1.1...1.5 times the resistance of the central part of reaction composition.
Patent UA-42586-A (UA)
Title: Sector of disk vacuum filter
Inventor: Holdberg Yurii Serhiiovych
IPC: B01D33/23
Filed: 2001-04-10
Abstract: The invention relates to the filtration field, in particular, to disk vacuum filters for dehydration of finely ground materials and may be used, in particular, in mining and chemical fields. The sector of disk vacuum filter contains two drain bases in the form of bearing edges, support partitions, neck for drainage of filtrate. The bearing edges of drain base are located in parallel with the axis of sector at an equal distance each from other. The ration of the height of the bearing edges to the thickness of drain basis is equal to 1:1.51:2 on the periphery and 1:21:2.5 – near the neck. Support partitions have rectangular section and located in perpendicular relative to the sector axis. The distance between bearing edges is 5-10 mm, and the height of the bearing edges is 8-12 mm.
Patent UA-45628-A (UA)
Inventor: SHERENKOV IHOR ARKADIIOVYCH
Filed: 2001-05-14
Abstract: A unit for outburst gas from odorization appliances utilization. Area of application – gas industry, natural gas odorizers of gas-distribution stations (GDS). Main point of the invention is in the fact that in the place of connection of the exhaust pipeline and the low pressure pipeline, for the GDS own purposes, a turbulent mixer with multi-flow gas supply is installed. Nowadays several different solutions of the outburst gas exist: babbling of saturated with odorant vapor gas through the chloride of lime solution; mixing outburst gas, by means of gas ejector, the main flow of the gas of the GDS output pipeline; burning the outburst gas in a heating apparatus; burning outburst gas in a heating apparatus through mixing outburst gas to the gas for the GDS own purposes. This invention provides qualitative mixing of outburst gas with gas for GDS own purposes.
Patent UA-50094-A (UA)
Inventor: KRYZHANIVSKYI YEVSTAKHII IVANOVYCH
Filed: 2001-07-31
Abstract: 潃湮捥楴湯漠⁦瑳敥⁬敨摡琠⁯潰祬敭楲ⵣ潣灭獯瑩⁥潢祤漠⁦異灭戠慥⁭湩汣摵獥瀠汯浹牥捩挭浯潰楳整戠摯⁹景瀠浵⁰敢浡‬楷桴椠獴攠摮映硩摥戠⁹敭湡⁳景琠牨慥楤杮椠⁮祣楬摮楲慣⁬潨獵湩⁧景猠整汥栠慥⹤䤠⁮桴⁥瑳敥⁬敨摡愠摮漠⁮潰祬敭楲ⵣ潣灭獯瑩⁥潢祤漠⁦桴⁥異灭戠慥⁭湡愠祳浭瑥楲⁣桴敲摡摥猠牵慦散眠瑩⁨楣捲汵牡瀠潲楦敬椠⁳牰癯摩摥‬潦⁲湩瑳污慬楴湯漠⁦瑳敥⁬畴湲琠慨⁴捡獴愠⁳⁡潣湮捥楴杮攠敬敭瑮戠瑥敷湥琠敨猠整汥栠慥⁤湡⁤潰祬敭楲ⵣ潣灭獯瑩⁥潢祤漠⁦琠敨瀠浵⁰敢浡‮瑁琠慨ⱴ愠⁴桴⁥湥獤漠⁦祣楬摮楲慣⁬潨獵湩⁧景琠敨栠慥⁤湡⁤桴⁥潢祤漠⁦桴⁥敢浡挠湯捩污猠牵慦散椠⁳牰癯摩摥‬⸠਍
Patent UA-50457-A (UA)
Title: Digital device for analyzing distribution of thermal characteristics
Inventor: TSIDELKO VLADYSLAV DMYTROVYCH
Filed: 2002-01-15
Abstract: The proposed digital device for analyzing distribution of thermal characteristics contains series-connected heat flow and temperature transducers, a switching unit with additional inputs connected to the outputs of three scaling converters, a differential amplifier, an analog-to-digital converter, an interface unit, a computer, a control unit, and alternate-current generator. Additionally, the device contains two switches, a summing unit with inverted output signal, a power supply unit, an electric heater, and a digital-to-analog converter.
Patent UA-55688-A (UA)
Title: Dissecting table for anatomical studies
Inventor: DEMIANENKO VOLODYMYR VASYLIOVYCH
Filed: 2002-04-26
Abstract: The dissecting table for anatomical studies consists of the horizontal bench and the vertical supports of waterproof design made from stainless steel. The bench for the body allowing for its displacement in the horizontal plane is mounted within the waterproof and corrosion-resistant reservoir filled with preserving solution. The reservoir is equipped with the bench-lifter and the horizontally operated sealing flaps. Furthermore the assembly comprises the illuminator, the tap, and mechanically triggered exhaust ventilation.
Patent UA-60614-A (UA)
Title: Internal combustion engine
Inventor: KOROHODSKYI VOLODYMYR ANATOLIIOVYCH
Filed: 2003-01-14
Abstract: An internal combustion engine with a direct fuel injection to combustion chamber and spark ignition through distribution of fuel charge in the volume of combustion chamber in layers. The use of the engine makes it possible to increase economy of the two-stroke engine in idle mode and at partial loading by 40 – 50 %, to decrease exhaust of toxic substances with worked-out gases by 60 – 90 %.
Patent DO-P2010000394-A (DO)
Title: Isoquinolas e isoquinolinonas sustituidas en calidad de inhibidores de la rho-quinasa
Inventor: PLETTENBURG OLIVER
IPC: C07D217/24
Filed: 2010-12-20
Abstract: La invención se refiere a isoquinolinas e isoquinolinonas sustituidas de la fórmula (l) útiles para el tratamiento ylo prevención de enfermedades asociadas con la Rho- quinasa y/o la fosforilación mediada por la Rho-quinasa de la fosfatasa de miosina de cadena ligera, y a composiciones que contienen dichos compuestos.
Patent DO-P2012000309-A (DO)
Title: Procedimiento para la preparacion de diacido 3,6,9-triaza-3,6,9-tris(carboximetil)-4-(4-etoxibencil)-undecanoico cristalino y el uso para la preparacion del complejo de gadolinio del diacido 3,6,9-triaza-3,6,9-tris(carboximetil)-4-(4-etoxibencil)-undecanoico"
Inventor: PLATZEK JOHANNES
IPC: C07C227/18
Filed: 2012-12-11
Abstract: RESUMEN PROCEDIMIENTO PARA LA PREPARACION DE DIAC IDO 3,6,9-TRIAZA-3,6,9-TRIS(CARBOXIMETIL)-4-(4-ETOXIBENCIL)-UNDECANOICO CRISTALINO Y EL USO PARA LA PREPARACION DEL COMPLEJO DE GADOLINIO DEL DIACIDO 3,6,9-TRIAZA-3,6,9-TRIS(CARBOXIMETIL)-4-(4-ETOXIBENCIL)-UNDECANOICO" por saponificación de éster di–ter–butílico del diácido 3,6,9–triaza–3,6,9–tris(ter.–butoxicarbonilmetil)–4–(4–etoxibencil)–undecanoico de la fórmula II en una solución acuosa de hidróxido de metal alcalino y al uso de diácido 3,6,9–triaza–3,6,9–tris(carboximetil)–4–(4–etoxibencil)–undecanoico de la fórmula I para la preparación del complejo de gadolinio de diácido 3,6,9–triaza–3,6,9–tris(carboximetil)–4–(4–etoxibencil)–undecanoico [(Gd–EOB–DTPA) = Primovist®].
Patent DO-P2015000127-A (DO)
Title: Formulación farmacéutica de n-[5-[2-(3,5-dimetoxifenil)etil]-2h-pirazol-3-il]-4-[(3r,5s)-3,5-dimetilpiperazin-1-il] benzamida
Inventor: BAKER NOEL ALAN WELDON
IPC: A61K31/496
Filed: 2015-05-27
Abstract: SE PROPORCIONAN COMPOSICIONES FARMACÉUTICAS QUE COMPRENDEN UN COMPUESTO DE FÓRMULA (I), SEGÚN SE DEFINE EN LA PRESENTE, Y UNA CANTIDAD DE UN AGENTE EFERVESCENTE ALCALINO QUE SEA SUFICIENTE PARA PROPORCIONAR UNA DISOLUCIÓN SATISFACTORIA IN VITRO; Y QUE COMPRENDEN ADEMÁS UNO O MÁS INGREDIENTES FARMACÉUTICAMENTE ACEPTABLES; Y PROCESOS PARA OBTENERLAS. FORMULA (I)
Patent EC-SP14013320-A (EC)
Title: Sistema para el control dinámico de la rodadura del (de los) rodillo(s) de guía para un conjunto para el guiado de un vehículo a lo largo de al menos un carril
Inventor: ANDRE JEAN-LUC
IPC: B60C23/00
Filed: 2014-04-23
Abstract: El sistema de control dinámico (1) de rodadura sobre al menos un carril de guía para un sistema de guiado (2) de un vehículo a lo largo de al menos un carril de guía (3), compuesto de al menos un rodillo (9) o al menos un par (11, 14) de rodillos de guía (9) que ruedan a lo largo de este carril de guía (3), se caracteriza porque incorpora un sensor de vibración (5) situado próximo a al menos un rodillo (9) o a al menos un par (11, 14) de rodillos de guía (9) y un sensor de proximidad (7), y porque las señales transmitidas por estos sensores (5, 7), o por los circuitos en los que se sitúan, se analizan continuamente para establecer un comienzo de fallo de guiado, un fallo de guiado, un límite de desgaste de, o daños a, el (los) rodillo(s) (9) o sus gomas (24). Esta invención es de interés para los fabricantes de vehículos guiados a lo largo de al menos un carril.
Patent GB-189701700-A (GB)
Title: Improvements in and relating to Shaving Paper.
Inventor: QUELCH HENRY CHARLES
Filed: 1897-01-21
Granted: 1897-02-27
Abstract: 1700. Quelch, H. C. Jan. 21. Paper holders. -Sheets of shaving-paper are bound together in the form of a book, and perforated to facilitate severance. The sheets may bear advertisements, and the whole may be provided with a cover bearing advertisements and with a suspending-loop.
Patent GB-189706179-A (GB)
Title: Improvements in and connected with Pneumatic Tyres, and in Wheel Rims for Use therewith.
Inventor: STANILAND CHARLES JOSEPH
Filed: 1897-03-09
Granted: 1897-05-29
Abstract: 6179. Staniland, C. J. March 9. Tyres, pneumatic; felloes or rims.-Improvements are described in the tyres setforthin Specification No. 13,491, A.D. 1896. The edges of the rim are doubled inwards, as shown at a<1> in Figs. 1 and 2, and have, at intervals, projections a<2> to engage with enlargements c<1> on the edges of the cover. These enlargements are separated by plain edges c<4>, Fig. 4, and have interlocking projections and recesses c<3>. To secure the tyre on the rim, the plain portions c<4> are brought over the projections a<2>, and the enlarged edges placed in the groove of the rim. The tyre is then rotated on the rim into the position shown in Fig. 2, and locked by a spring catch d. In a modification, the edges of the cover are made plain throughout, and have short metal plates e, secured to them as shown in Fig. 6. In this case, slots a<3> are cut in the edges of the rim for their admission. In a second modification, the edges are not turned inwards and projecting pieces a<2> are brazed on as shown in Fig. 11 or otherwise secured. In a further modification, the means of attachment are provided at the sides of the cover in place of on the edges. Similar means may be employed for attaching singletube tyres. Puncture is prevented by bands of leather, paper, or other suitable materials or fabrics saturated with gutta-percha, india rubber, shellac, copal, or other hard gums. Such bands may be roughened and secured to the outside of the cover, or may be embedded in the said cover, or may be placed between the latter and the air tube. Fig. 15 shows a longitudinal section of an inflating-valve, of which the valve seat and valve proper are of indiarubber. To deflate the tyre, the valve is pushed off its seat by screwing in a hollow stem g<7> provided with lateral branches near the end. When unscrewed, the end of this stem rests on a pad of india-rubber in the dust cap.
Patent GB-189710244-A (GB)
Title: Improvements in Stoppers for Bottles, Jars, and like Vessels for Containing Liquids.
Inventor: DURAND JOSEPH
Filed: 1897-04-24
Granted: 1897-06-26
Abstract: 10,244. Durand, J., and Graef-Beaumont, F. April 24. stoppers; refilling, preventing.- Relates to stoppers adapted to prevent the refilling o f bottles &c. The stopper A is formed with a chamber a<2> and end passages a<3>, a<4>, the end a<1> being soldered into the neck of the bottle &c. The passage a<3> is normally closed by an elastic plate or diaphragm b, which is held on its seat by the plug c under the action of the spiral spring d. The outer end a<4> of the stopper is normally closed by the conical plug e. To empty the vessel, the plug e is withdrawn and the vessel is inverted, the weight of the liquid serving to open the valve. When the vessel is returned to its upright position the valve closes and prevents refilling. The stopper is made in two longitudinal halves, which are soldered or otherwise joined together. In a modification, the stopper is provided with an air-inlet tube, to admit air when emptying the vessel.
Patent GB-189716198-A (GB)
Title: Improvements in Tyres.
Inventor: JAMES SAMUEL HUBBARD
Filed: 1897-07-08
Granted: 1897-08-14
Abstract: 16,198. James, S. H. July 8. T y r e s, pneumatic, preventing puncture of. In combination with an air tube P, a flexible outer cover B, having a layer of cork C, is used. The cork is held in place by a strip d of flexible material, and protects the air tube from punctures.
Patent GB-189717455-A (GB)
Title: An Improvement in Machine Belt Fasteners.
Inventor: CHASE WILLIAM HENRY
Filed: 1897-07-24
Granted: 1897-11-27
Abstract: 17,455. Chase, W. H. July 24. Belt and band fastenings.-Staples of soft steel wire are formed with the ends turned up as shown in Figs. 2 and 4 ; these are inserted in holes punched in the ends of the belt, after which the turned up ends are bent down against the belt as shown in Fig. 3.
Patent GB-189717853-A (GB)
Title: Improvements in the Treatment of Night Soil.
Inventor: ROYSTON JABEZ
Filed: 1897-07-30
Granted: 1898-04-16
Abstract: 17,853. Royston, J. July 30. Excremental matters and refuse, treating.-Relates to improvements on the invention described in Specification No. 16,078, A.D. 1896. The closet receptacle is lined with paper to prevent soiling, and the excrement is mixed in the receptacle with vegetable waste, soot, &c. The buckets, when full, are placed in sterilizing-chambers a heated by the fires b in communication with a central chimney f by flues C.
Patent GB-189718667-A (GB)
Title: Improvements in the Manufacture of Door Bolts.
Inventor: WAKELAM SAMUEL
Filed: 1897-08-12
Granted: 1898-02-26
Abstract: 18,667. Wakelam, S. Aug. 12 Sliding bolts.-Tbe casings of sliding bolts for doors are made from metal blanks, Fig. 7, the centre portion being troughed, as shown at b, Fig. 4, and lugs a<2> bent underneath to form cylindrical portions. Lugs a' serve for attaching the casing to the door, the slot e receiving the pin for operating the bolt. A lug a<5> serves to close the end of the casing. The staple is formed from a blank, Fig. 10, the portion a' being troughed, Fig. 11, the piece a<4> forming one end, and the portion a<2> being bent under to form a base-plate, the portions a', a<2> being coincidently perforated for attachment.
Patent GB-189718760-A (GB)
Title: An Improved Appliance for use in connection with Beer and other Engines for Lifting and Forcing Liquids.
Inventor: DICKINSON MATTHEW
Filed: 1897-08-13
Granted: 1898-06-18
Abstract: 18,760. Dickinson, M. Aug. 13. Cooling liquids.- Beer or other beverage is cooled by surrounding the conveying-pipe A with a jacket B through which cold water is allowed to flow. The pipe A may be straight or coiled as shown.
Patent GB-189719867-A (GB)
Title: Improvements in Prismatic Piston Valves.
Inventor: CAMPBELL JAMES JENNINGS
Filed: 1897-08-28
Granted: 1898-06-25
Abstract: 19,867. Campbell, J. J. Aug. 28. Valves, distributing.-Relates to prismatic piston valves of the type described in Specification No. 11,438, A.D. 1896. According to the present invention the valve shown in longitudinal section in Fig. 2, and in transverse section in Fig. 3, is divided longitudinally into several parts A<1>, A<2>, A<3>, which are capable of being pressed apart by springs lodged in recesses. The valve sections are held on the valve spindle E by jamming them between two large washers E', E<2> by means of nuts outside the valve chamber. When it is desired to take up wear, the nuts are temporarily slackened to permit the springs to expand the valve, and are then again tightened so as to fix the sections rigidly. The invention is also shown in the Specification as applied to double-ported valves.
Patent GB-189723847-A (GB)
Title: Improvements in the Manufacture of Double Pile Fabrics.
Inventor: HALLENSLEBEN OTTO
Filed: 1897-10-16
Granted: 1897-11-20
Abstract: 23,847. Hallensleben, O. Oct. 16. Carpets; pile fabrics.-In double pile carpets and other fabrics the tufts of pile d are bound in by a plain-woven ground web, consisting of wefts e and warps b, b<1>. and an additional plain-woven binding-web, consisting of wefts f and warps a, a<1>, and the two webs are bound together by warp threads c.
Patent GB-189725998-A (GB)
Title: Improvements in Automatic Circuit-breakers.
Inventor: FAIRWEATHER WALLACE
Filed: 1897-11-09
Granted: 1897-12-18
Abstract: 25,998. Fairweather, W., [Crocker-Wheeler Electric Co.]. Nov. 9. Cut-outs.-Relates to a magnetic cut-out which operates when the current exceeds or falls below certain limits. The circuit E, E includes the coil of the magnet A, a portion of the armature B, and a contact F. A second pivoted armature C is provided, its position being adjusted by a screw D. With a normal current, the armature B is held up to complete the circuit at F, its distance from the core being adjusted by a screw J. When the current drops below the limit, the armature falls away and breaks the circuit. With an excessive current, the armature C is attracted and closes the magnetic circuit, and the armature B again falls away.
Patent GB-189729929-A (GB)
Title: Improvements in Apparatus for Indicating the Points Scored in Billiards and similar Games, and for Recording the Number of Games Played.
Inventor: ROTHWELL OSWALD OSRIC
Filed: 1897-12-17
Granted: 1898-11-05
Abstract: 29,929. Rothwell, O. O. Dec. 17. Scoring and marking billiards and like games. Fig. 3 shows an elevation from the back of a part of the scorer, Fig. 5 a plan of the indicating- mechanism, and Fig. 7 a side elevation of the mechanism for holding and releasing the roller. The mechanism is, of course, in duplicate, one portion for spot and the other for plain. The rectangular roller A, having a set of 25 numerals on each of its four faces so as to score up to 100, is mounted in bearings so as to be capable of rotating in either direction, and is provided at its zero end with bevel gearing D, D'. The sliding pointer B, of the usual shape externally, is provided behind the slot c with a catch pawl h gearing with a rack H to prevent backward movement of the pointer, which movement is brought about by an incline on the rack at its further end lifting the pawl, whereby a projection h<3> thereon is engaged by a pivoted lever h<2>. As the pointer is moved forward to score the game, it coils up a spring E by means of a connecting-cord K and a drum E' geared with the barrel of the spring. The spring is then free to draw the pointer backwards, and, when the pointer arrives at the zero end, the lever h<2> is struck by a pin, thereby allowing the pawl h again to fall. A projection u<1> from the pointer at the same time removes a spring pawl u from engagement with a ratchet U on the roller axle, allowing the latter at that instant to move backwards, as explained below. The intermittent forward rotation of a quarter of a revolution of the roller, which occurs each time the pointer is brought back to the zero end by the spring E, is also accomplished by the same spring, acting through a suitable train of wheels. The spindle m of the wheels d<4> (which is operated from the spring E) projects through the casing, and is connected by gearing to pointers rotating around dials so as to indicate twenty-fives, hundreds, and thousands. At the other end of the roller is the mechanism for automatically returning the roller to show its 0 to 25 face after 100 has been scored, or to allow that action to take place, after 50 has been scored, on pressing an external knob connected to the rod R. Upon the roller axle is a spring G, and a ratchet F, normally prevented from backward rotation under the action of the spring G by a pawl f. The pawl is removed from engagement with the ratchet by means of a pin f<1> projecting from the ratchet, and engaging with a loose finger P which engages with a pin f on the pawl and releases it from the ratchet. To release the rod R, whereby it may operate the releasing- mechanism when 50 has been scored, a second pin s<1> on the ratchet F removes the hooked end of a lever S from engagement with a pin r on the rod R. In a modification, the pointer travels as a screw which effects the forward rotation of the roller as each 25 is scored.
Patent GB-189801369-A (GB)
Title: Improvements in Apparatus for Preparing Aerated Waters.
Inventor: LOZE AUGUSTE EMILE HENRY
Filed: 1898-01-18
Granted: 1898-03-26
Abstract: 1369. LozÚ, A. E. H. Jan. 18. Gasogenes. - The gasogene is of the shape shown in Fig. 1, in which a is the water reservoir and c the gasgenerating chamber. Fig. 2 shows these parts separated from e a c h other and inverted for filling purposes. The vessel a is filled with water through the orifice b, the chamber c is filled with water as far as the level of the perforated plate d, and on this plate is placed a mixture for generating carbonic-acid gas. The cap f is then screwed on and the parts a, c are screwed together and the apparatus again inverted so that the water generates gas which, passing through perforations h in a close-ended tube i, forces back a piece of rubber tubing g and rises into the water in the vessel a. The perforated plate d may be replaced by a perforated chamber projecting into the chamber c.