baber/WOPTO huggingface dataset:
Patent KR-200493934-Y1 (KR)
IPC: A61L9/12
Filed: 2019-05-14
Granted: 2021-07-01
Abstract: 본 고안에 따른 팩 디퓨저는, 
납작하게 압축될 수 있으며, 내부에 디퓨저액이 저장되는 공간이 형성되며, 상면에 상기 디퓨저액이 저장되는 공간과 연통되는 스틱공이 뚫린 몸체; 
상기 몸체의 상면에 일체로 형성되어 상기 스틱공을 가리는 덮개; 
상기 몸체의 후면에 부착되어 있다가, 상기 덮개가 제거된 후, 상기 스틱공에 꽂혀 상기 디퓨저액을 빨아들이는 스틱; 
상기 몸체의 후면 하측에 부착되며, 다단으로 접혀질 수 있는 스탠드; 및 
상기 스탠드의 후면 상단에 부착된 양면테이프를 포함하는 것을 특징으로 한다.
Patent KR-200495815-Y1 (KR)
Title: 속포장 박스
IPC: B65D5/18
Filed: 2020-07-21
Granted: 2022-08-24
Abstract: 본 고안은 내용물을 포장하기 위한 포장박스의 내부에 삽입되어 내용물을 더욱 안전하게 보존하기 위한 일 면이 각각 개구된 사각 형상의 하부 박스(20)와 상부 박스(30)의 내부에 교차 삽입되어 내용물을 보존하기 위한 속포장박스로서, 상기 하부 박스(20)의 바닥면과 면접하는 바닥접면(100), 상기 상부 박스(30)의 천장면과 면접하는 천장접면(200), 및 상기 바닥접면(100)과 상기 천장접면(200) 사이를 연결하는 측면을 형성하고, 상기 하부 박스(20)의 내측면과 상기 상부 박스(30)의 내측면 양측에 교차 면접하는 교차접면(300)을 포함하고, 상기 교차접면(300)은 상기 바닥접면(100)과 상기 천장접면(200)을 일 측면에서 직접 연결하는 직접연결면(310)과 상기 바닥접면(100)과 상기 천장접면(200)의 접힘에 의하여 형성되는 세 측면의 접힘연결면(320)으로 구분되고, 상기 접힘 연결면(320)은 이중 중첩면으로 구성된다.
Patent KR-200493462-Y1 (KR)
IPC: A47B96/20
Filed: 2020-09-02
Granted: 2021-04-02
Abstract: 본원고안은 가구용 손잡이 마감캡에 관한 것으로서, 가구를 구성하는 판넬에 장착되는 손잡이 프레임의 끝단에 결합되는 마감캡에 있어, 전후방향으로 소정의 길이를 가지고 형성되는 지지부; 상기 지지부의 일 측 끝단에 배치되고 수평방향으로 돌출형성되는 손잡이 지지부; 및 상기 지지부의 타 측 끝단에 배치되고 평면상 " ㄷ "자 형상으로 형성되는 마감 지지부;가 일체로 형성된다.
Patent KR-200497143-Y1 (KR)
IPC: G09B23/02
Filed: 2021-09-10
Granted: 2023-08-08
Abstract: 본 개시의 일 실시예에 따른 시계형 수학 교구는, 복수의 숫자가 표시된 원형의 숫자판, 상기 숫자판의 중심부에 회동 가능하게 연결되며, 상기 복수의 숫자 중 적어도 일부를 가리킬 수 있도록 구성된 제1 지시자 및 제2 지시자, 및 상기 제1 지시자가 상기 숫자판의 중심부를 축으로 회전할 때 사전 결정된 비율로 상기 제2 지시자를 회전시킬 수 있도록 구성된 구동부를 포함한다.
Patent PH-22017000969-Y1 (PH)
Title: Process of producing translucent cashew (anacardium occidentale) leaves and the product produced thereof
Inventor: PALENZUELA REMEDIOS N
IPC: B32B5/02
Filed: 2017-11-29
Abstract: The present utility model relates to the process of producing Translucent Cashew (Anacardium occidentale)Leaves comprising the steps; washing, softening, rinsing, drying, bleaching, soaking into the binder solution, drying, pressing and laminating the translucent leaves to the desired backing material then pressing the laminated translucent leaves. It further relates to the use of translucent Cashew Leaves in the manufacture of gifts, housewares, decors, furniture, lamps and lighting applications.
Patent PH-22018000852-Y1 (PH)
Title: Process of producing instant powder marinade mix for fish ceviche
Inventor: ANDOY WILIVA G
Filed: 2018-09-05
Abstract: A process of producing an instant powder marinade mix for fish ceviche locally known as "kinilaw" is hereby disclosed which comprises the steps of cleaning the fresh spices (lemon, onion, ginger, Tabon-tabon (Atuna racemosa) and native lime (Citrus aurantiifolia) with a running potable water. Then, peeling and scraping of the aforementioned spices to expedite the extraction process. Mixing of the extracts to the coconut vinegar, then, spray drying of the collected extracts at 80 degree Celsius for 2 hours at 400 psi. Finally, packing the collected powder from spray drying in polyethylene bag.
Patent BR-202012002187-Y1 (BR)
Title: disposição construtiva em colchão de espuma
Inventor: DOMINGOS VITIELLO CIRYLLO NETO
IPC: A47C27/15
Filed: 2012-01-31
Abstract: APERFEIÇOAMENTO INTRODUZIDO EM COLCHÃO DE ESPUMA constituído por colchão de espuma (1), com bloco espesso inferior (5) tendo, superiormente, canais transversais superficiais (6) coberto por estreita camada de espuma menos ou mais densa (7); o colchão de espuma (2) com bloco espesso central (8) com canaletas transversais ligeiramente rasas ou profundas (9) nas duas faces e cobertas por estreita camada de espuma menos ou mais densa (10); o colchão de espuma (3) com bloco espesso superior com partes superior (11) e inferior (11') e, superiormente, com rasas ou profundas canaletas transversais superficiais (12) e, inferiormente, da parte inferior (11') coberta por estreita camada de espuma menos ou mais densa (13) e, inferiormente, com rasas ou profundas canaletas transversais superficiais (14) e o colchão de espuma (4) com bloco espesso com partes de espuma (15) e (15') com faces de união com orifícios passantes oblongos (16) e quadrados (17) e, externamente, com rasas ou profundas canaletas transversais superficiais (18), ditos colchões com revestimento externo (19) com fecho ecléir (zíper) com cursor (20), cujo desenvolvimento visa resolver problemas gerados pela atual forma construtiva dos colchões de espuma visando aumentar o conforto durante o seu uso cotidiano pelos usuários e simplificar a forma de exposição destes colchões nas lojas para potencializar as suas vendas.
Patent BR-202016018990-Y1 (BR)
Title: Equipamento para nivelar um terreno ou uma faixa de terra
Inventor: MARCOS EDUARDO FIORI DE MUNARI
IPC: A01B33/02
Filed: 2016-08-17
Abstract: equipamento para nivelar um terreno ou uma faixa de terra o presente invento revela um equipamento para nivelamento de uma faixa de terra a ser trabalhada, sendo dotado de meios de compressão corpos estranhos ao ambiente de trabalho para que estes corpos fiquem alinhados com a geometria do terreno ou faixa de terra a ser trabalhada, em uma segunda etapa de trabalho um meio de corte de plantas invasoras, por exemplo, para que as mesmas não interfiram nas etapas de preparo do terreno ou faixa de terra.
Patent BR-202017023619-Y1 (BR)
Title: processo construtivo de fechadura para portas e janelas de vidro
Inventor: DIOGO RAPIZO FARIA
IPC: E05B9/02
Filed: 2017-11-01
Abstract: processo construtivo de fechadura para portas e janelas de vidro”. refere-se o presente pedido de patente de modelo de utilidade a um “processo construtivo de fechadura para portas e janelas de vidro”, voltada para o setor da construção civil. portas e janelas deslizantes ou corrediças de vidro são bastante populares na construção civil porque aproveitam ao máximo a luz natural nas edificações. o inventor no intuito de melhorar e tornar mais rápido e funcional, o seu processo de fabricação, criou este processo construtivo de fechadura para portas e janelas de vidro, no intuito de agilizar a sua produção e tornar menor o custo final do produto acabado. o objeto deste pedido de patente de modelo de utilidade é compreendido internamente por conjunto da lingueta (1) e externamente por um conjunto de cilindro com duas chaves (2) e segredo já conhecido do estado da técnica, que pelo simples acionamento da chave faz girar o mecanismo chamado “nariz” (3) que aciona o conjunto da lingueta (1) fazendo que o mesmo passe pelo rasgo do componente chamado chapa testa (6) e faça o travamento da porta em que está instalado o conjunto da fechadura (figura 1 e 2).
Patent BR-202018074699-Y1 (BR)
Title: Disposição construtiva aplicada em suporte para distribuição de cargas em carroceria baú
Inventor: PAULO PHILLIPPE GIRAUDEAU
IPC: B62D33/02
Filed: 2018-11-29
Abstract: DISPOSIÇÃO CONSTRUTIVA APLICADA EM SUPORTE PARA DISTRIBUIÇÃO DE CARGAS EM CARROCERIA BAÚ, tendo colunas (1) e vigas telescópicas (2), em que as primeiras são perfis metálicos fixáveis verticalmente contra o lado interno das paredes laterais de uma tradicional carroceria tipo baú (B), onde as colunas (1) são alinhadas aos pares, uma peça de cada lado e, para formar uma plataforma, são utilizados pelo menos dois pares de colunas (1), como também cada par de colunas (1) constitui suporte para pelo menos uma viga telescópica (2), cujas extremidades são igualmente munidas de cabeças articuladas de engate (3) que são acopladas e travadas em diferentes pontos da altura de cada coluna (1), onde pelo menos duas vigas telescópicas (2) são alinhadas horizontalmente para formar uma plataforma de apoio para diferentes volumes de cargas.
Patent DK-202000084-Y3 (DK)
Title: Klapstol, liggestol og klapstolsramme deraf
Inventor: BAOQING YANG
IPC: A47C7/00
Filed: 2020-09-07
Granted: 2020-12-14
Abstract: Der er tilvejebragt en klapstolsramme, en klapstol og en liggestol. En fodrørssamling indfatter et forreste fodrør og et bageste fodrør, der er hængslet forbundet ved en top, det bageste fodrør er tilvejebragt med en første konnektor, det forreste fodrør er tilvejebragt med et sæderør, der har én ende hængslet til det forreste fodrør og en anden ende hængslet til den første glider, og den første glider er hængslet til et ryglænsrør, to sæt af fodrørssamlingerne er tilvejebragt modstående, hvert bageste fodrør er respektivt tilvejebragt med en anden konnektor, der er forbundet med et forbindelsesrør, som har én ende hængslet dertil og en anden ende hængslet til ét forreste fodrør, og den forreste ende af hvert sæderør er respektivt tilvejebragt med et forreste krydsrør, der har én ende hængslet dertil og en anden ende hængslet til en nederste ende af fodrøret af det andet sæt af fodrørssamlingen modstående den fodrørssamling, i hvilken sæderøret er anbragt. I denne samling udfoldes de forreste fodrør og de bageste fodrør ved hjælp af tyngdekraften og sikres ved hjælp af de første glidere og de anden glidere på de bageste fodrør, med henblik på at løse det mere komplicerede problem ved manuel betjening på støttekonstruktionen til opnåelse af foldningen i den konventionelle teknologi.
Patent IT-221549-Z2 (IT)
Title: Dispositivo per il controllo dell'avanzamento di elementi guidati
Inventor: FRANCO GIUSEPPE
IPC: F15B/
Filed: 1991-01-09
Granted: 1994-07-22
Abstract: Un dispositivo a comando pneumatico per il controllo dell'avanzamento di elementi guidati comprende un pistoncino sollecitato elasticamente verso una posizione di impegno con un nottolino di arresto degli elementi guidati. Un secondo pistoncino sollecitabile pneumaticamente verso una posizione di disimpegno del nottolino e mezzi a leva per trasmettere le forze di sollecitazione dall'uno all'altro. (fig. 6)
Patent IT-223285-Z2 (IT)
Title: Dispositivo per la regolazione rapida dell'altezza di una sella per bicicletta.
IPC: B62J/
Filed: 1991-09-10
Granted: 1995-06-21
Abstract: Il dispositivo comprende un primo elemento tubolare mobile (4) alla cui estremità superiore (6) è fissata la sella (2), un secondo elemento tubolare (10), inseribile in un elemento tubolare (11) del telaio della bicicletta, entro il quale è montato scorrevole il primo elemento tubolare (4), mezzi elastici (8) interposti fra il primo (4) ed il secondo elemento tubolare (10), e mezzi di bloccaggio (22) della posizione del primo elemento tubolare (4) rispetto al secondo elemento tubolare (10). Il secondo elemento tubolare (10) è formato da un manicotto inferiore (12) presentante una porzione superiore eccentrica (16), in cui lo spessore di parete varia da un valore minimo ad un valore massimo, e da una boccola superiore eccentrica (14) inseribile intorno alla porzione superiore (16) del manicotto inferiore (12) ed avente spessore di parete variabile da un valore minimo ad un valore massimo.
Patent GB-249925-A (GB)
Title: Improvements in the manufacture of hydrogen
IPC: C01B3/10
Filed: 1925-01-01
Abstract: 249,925. Rogers, W. P. Jan. 1, 1925. Producers.-In an iron-steam process for the production of hydrogen the spent reducing gas passes from the retorts a through a main o, valves e, u, and heat-exchanger p to a generator r. By means of valves q the gas may be made to pass either up or down the generator r. Towards the end of the reducing stage, the partly spent gas may be passed directly to the scrubber t, and the generator may be blown to incandescence by an air-blast. The hot blow-gas from the generator r is passed through valve w to the combustion flue b for external heating of the retorts a.
Patent HU-T39967-A (HU)
Title: Herbicide compositions containing benzisoxazole /or benzisotiazole/ derivatives as active substance and process for preparing the active ingredients
Inventor: NIELSEN DONALD R
IPC: C07D413/12
Filed: 1986-01-06
Abstract: Benzisoxazole and benzisothiazole cpds. of general formula I) are new, where Ar=(II), (III) or (IV); W=O, S(O)x or NR9; x=0-2; R9=H or 1-4C alkyl; W1=O or S(O)x; W2=O or S(O)x; X=CY, N, N-O or N(+)-CH3; Q=N or N-O; Z=CH or N; Y=H, halo, CN, NO2 or lower haloalkyl; Y1 and Y2 each independently=H, halo, NO2, CN, lower alkyl, lower haloalkyl, lower alkoxy, lower alkoxyalkyl or lower alkylsulphonyl; Y3=halo, CN, NO2 or lower haloalkyl- n=0-3; R=(V) where A=O, S(O)x or NR9; m=zero or 1; R1=H, halo, NO2, CN, 1-4C alkyl, 1-4C haloalkyl, cycloalkyl opt. substd. alkoxy, alkoxyalkyl, CO2H, alkoxycarbonyl, Ar, Ar-W-, Ar-R4 or Ar-R4-W-; R4=1-4C alkyl; R2=H, halo or 1-4C alkyl; R3=alkylene, alkenylene or alkynylene of up to 3C, opt. substd. by R1 values; p=zero or 1; B=H, 1-6C alkyl, 1-6C haloalkyl, dialkylphosphonyl, -OR5, -SR5 or -NR6R7; R5=H, alkali metal, opt. substd. ammonium, 1-6C alkyl, haloalkyl, oxoalkyl, hydroxyalkyl, thioalkyl, alkoxyalkyl, cycloalkyl, alkylene-S(O)x-alkyl, alkenyl or alkynyl, alkoxycarbonylalkyl including amides and salts, trialkylammoniumalkyl, dialkylphosphonylalkyl, Ar or Ar-R8, or R5 is a 5- or 6-membered heterocyclic ring contg. up to 3 hetero atoms, R8=1-4C alkyl; R6 and R7 each independently=H, 1-6C alkyl, alkoxy, alkoxyalkyl, alkylaminoalkyl, alkylsulphonyl, dialkylphosphonylalkyl alkylene-S(O)x-alkyl, alkenyl or alkynyl or R6 and R7 may combine to form with N a 5- or 6-membered ring contg. upto 3 hetero atoms; L=O or S(O)x when B is -OR5, -SR5 or -NR6R7, but when B is H, alkyl or alkoxy then L may also be dialkoxy or dialkoxyalkylene.
Patent JP-H10198119-A (JP)
Title: Image forming device
Inventor: MATSUZOE HISANOBU
IPC: G03G15/01
Filed: 1997-01-06
Abstract: PROBLEM TO BE SOLVED: To provide an image forming device by which printing speed in the case of color printing or in the case of single color printing such as monochrome printing can be accelerated. SOLUTION: In this orthogonal transfer system image forming device, a toner image carried on a toner image carrier 1 stretched in the direction perpendicular to the carrying direction of printing paper 5 by plural rollers is transferred to the paper 5 in the direction perpendicular to the carrying direction of the paper 5 by a transfer counter roller 4 and the toner image transferred to the paper 5 is fixed. The device is constituted so that respective developing means 20C-20B for plural colors which attaches toner to the carrier 1 may be arranged along the rotating direction of the carrier 1.
Patent JP-S62158047-A (JP)
Title: Ink feeder
Inventor: NAWATE SHIGEO
IPC: B41F31/08
Filed: 1986-01-06
Abstract: PURPOSE:To make the feed of ink without staying on the surface of an rail possible, by a method wherein ink repellent coating material is spread on the ink rail of a rotary press and an ultrasonic wave exciter is set on the opposite surface of a roll. CONSTITUTION:An ultrasonic wave exciter 10 is installed near an ink feed part, and an ultrasonic wave receiver 11 near the top of an ink rail. Further,an ink repellent material 12 (for instance, silicone rubber) is spread from the vicinity of the outlet of the surface 9a facing the ink delivery roller 3 of an ink rail body 9 to is outside. Thus, if ultrasonic wave excitation is given to the ink rail body 9 with the ultrasonic wave exciter 10 and the said ultrasonic wave excitation is absorbed with the ultrasonic wave receiver 11, the progressive wave of elastic surface wave form generates in the ink rail body 9. Though the positions of the ultrasonic wave exciter and the receiver are reversed, the same effect can be also obtained.
Patent AT-A19884-A (AT)
IPC: F02M59/46
Filed: 1984-01-20
Abstract: 1. Fuel injection nozzle comprising a valve member which is urged against a valve seat in a valve chamber by means of a valve member spring (14) and the end of which remote from the valve seat extends into a chamber (15) that can be filled with fuel and accommodates the valve member spring (14), and a solenoid valve (8) for controlling the injection which in its open position connects the pressure chamber (9) of an injection pump with a spill conduit, characterised in that in a pumping chamber (31) of the fuel injection nozzle a plunger (13) is provided, and the pumping chamber (31) is connected to a conduit leading from the pressure chamber (9) of the injection nozzle to the valve chamber, and the end of the plunger (13) extending remotely from the pumping chamber rests upon the valve member spring (14), that the fuel pressure in said conduit acts upon the other end of the plunger (13), that the active cross-sectional area of the plunger (13) is greater than the cross-sectional area of the valve member, and that within the whole range of speed and load the plunger (13) performs its working stroke against the force of the spring before, at the beginning of the injection, the valve member is being lifted.
Patent CA-1083154-A (CA)
Inventor: SAMOUR CARLOS M
IPC: C08F2/00
Filed: 1970-09-22
Granted: 1980-08-05
Abstract: ABSTRACT OF THE DISCLOSURE         Quaternary ammonium salts having a lipophilic group covalently linked to the quaternary nitrogen through hydroxy-succinyloxy or hydroxysuccinylamino radicals are disclosed.    These quaternary ammonium salts are useful as monomeric emulsion stabilizers.
Patent DK-26487-A (DK)
Inventor: LEGRAND FRANZ
IPC: C01B13/32
Filed: 1987-01-19
Abstract: Process for the manufacture of a metal oxide powder for ceramic materials by the hydrolysis of a metal alcoholate in the presence of an acidic organic compound. The process applies to the production of metal oxide powders, such as zirconia powders, with a mean particle diameter of between 0.05 and 2 microns.
Patent DK-40381-A (DK)
Inventor: KLEINERT H
IPC: G06F13/28
Filed: 1981-01-29
Abstract: A method and a circuit arrangement are disclosed for transmitting binary signals between peripheral units which are connected to one another via a central bus line system. The signal transmission is to take place without the necessity of including a central processor, which is likewise connected to the central bus system. For this purpose, it is provided that signal transmission requests from the individual peripheral units are transmitted to a memory access device which is also connected to the central bus line system and which, in response to the receipt of such transmission request, de-activates the central processor in respect of the transmission of signals to the central bus line system. The memory access device supplies the peripheral units which are to participate in a signal transmission operation with control signals which transform the latter from a starting state into a transmitting state or into a receiving state and then, in alternation with control signals which serve for the output and receipt of signal groups. Following the transmission of the last signal of the number of signals reported to the memory access device in respect of a signal transmission operation, the memory access device supplies the peripheral units with a reset signal by which the same are returned from their transmitting and receiving states into their starting states.
Patent DK-56886-A (DK)
Inventor: HANSEN LEO BLICHER
IPC: E04G23/02
Filed: 1986-02-05
Abstract: A method and a tool for increasing the inside diameter of a chimney, for example for cleaning chimneys, combustion chambers, boilers and the like, which are covered with coatings on internal surfaces, for example shining soot, by means of blows from chains. The tool is provided with a holder 4 mounted at the end of a rotatable shaft 6, to which holder chain pieces 5 are fastened, for example consisting of individual elongate chain links, designed in such a manner that the chains 5 are mounted in a number of planes at right angles to the axis of rotation and fixed securely. In this way, a number of striking actions are brought about at each individual spot, the chains being held in their path by neighbouring chains, as a result of which much more effective and rapid chimney cleaning is achieved, and soot flakes are to a great extent pulverized and fall to the bottom of the chimney. The method and the tool can also be used for increasing the inside diameter in relation to the original inside diameter, after which a chimney liner can be inserted. <IMAGE>
Patent DK-60094-A (DK)
Inventor: TOBIESEN LISA
IPC: F02B37/02
Filed: 1994-05-27
Abstract: PURPOSE: To provide an internal combustion engine including an exhaust receiver capable of restricting oscillation effectively. CONSTITUTION: An internal combustion engine with a large constant-pressure turbocharger is provided with a number of cylinders 1 having the first longitudinal axes apart by the first fixed distance D along the longitudinal direction, two out of the cylinders have the second longitudinal axes apart by the second much longer distance E. The cylinders are connected to a common exhaust receiver 13 through the corresponding exhaust gas ducts. The receiver is divided into, at least, two receiver sections 13a, 13b between the two exhaust gas ducts and the sections are linked to each other by a flow passage 24 with a small cross-sectional area. The dividing part of the exhaust receiver 13 is located between the two cylinders which are apart by the first distance.  Two end plates 28, 29 are provided which have such a length as they can locate the dividing part between an arbitrary pair of cylinders without changing the distance between cylinders. It is thus possible to divide the exhaust receiver at the optimal location reducing the oscillation of the receiver.
Patent DK-79790-A (DK)
Inventor: PITTA PHILIPPE
IPC: H01R12/70
Filed: 1990-03-29
Abstract: PCT No. PCT/FR89/00397 Sec. 371 Date Jun. 18, 1991 Sec. 102(e) Date Jun. 18, 1991 PCT Filed Jul. 28, 1989 PCT Pub. No. WO90/01816 PCT Pub. Date Feb. 22, 1990.A cable connector for a multi-wire cable which includes a grounded casing and wherein the cable wires have their insulation stripped at one end, to expose the ground casing. The cable wires are connected to a socket. The one end of the cable is provided with a transfer piece of conductive metal to assure continuity of ground between connected equipment and the cable. The transfer piece is affixed mechanically to the ground casing and mechanically reinforces the cable connection to the socket. The transfer piece contains a part forming a catch which is made in the form of a comb having teeth bent in a U-shape to provide a flexible connection and at the same time a ground connection. The connector may further be provided with a clamp to press the transfer piece to the cable and assure contact of such piece with the grounded casing.
Patent DK-96790-A (DK)
Inventor: SHENG-JUNG WU
IPC: G07B17/00
Filed: 1990-04-18
Abstract: An improved digital mark-printer operated under control of a microprocessor and control program. A main shaft including a printing head with a plurality of numeral wheels is driven by drive circuits and the position of the shaft and wheels are sensed by sensor circuits, all under control of the microprocessor.
Patent GB-156191-A (GB)
Title: Improvements in apparatus for the production of distilled water
IPC: C02F1/04
Filed: 1921-01-03
Abstract: 156,191. Bleicken, B. March 23. 1914, [Convention date]. Addition to 2191/14, [Class 32, Distilling &c.]. Ball and float valves.-In apparatus for distilling water of the kind described in the parent Specification, the chamber 20 which receives the unevaporated water from the spray evaporator, and which is pro. vided with an exit pipe 37 leading the water through an auxiliary condenser to be reheated and thence again to the evaporator, is provided with a float 23 operating a valve 27 which is opened when the level falls in the chamber 20 and allows additional heated water to pass from a feed-pipe 10.