baber/WOPTO huggingface dataset:
Patent KR-200496096-Y1 (KR)
Title: 제과류 포장케이스
IPC: B65D25/04
Filed: 2020-11-02
Granted: 2022-11-07
Abstract: 본 고안은 빵이나 과자 등의 제과류를 손상되지 않도록 다수개 안정적으로 포장할 수 있으며, 포장된 상태가 보기에도 좋아 소비자들의 구매욕을 자극하여 매출증대에 도움이 되고, 소비자들이 포장된 제품의 외관도 쉽게 파악할 수 있어서 제품구입에도 도움이 되는 새로운 구성의 제과류 포장케이스에 관한 것으로서, 상부가 개방된 좌우로 긴 함체형상으로 되어 내부에는 수용공간(12)이 형성된 하부케이스(10)와, 하부가 개방된 좌우로 긴 함체형상으로 되어 상기 하부케이스(10)에 착탈가능하게 결합되어 하부케이스(10)의 상부를 커버하는 상부케이스(20)를 포함하며, 상기 하부케이스(10)의 좌우 측면 중 어느 하나는 상향으로 갈수록 외측으로 돌출되는 제1하부경사면(14)으로 이루어지고, 상기 하부케이스(10)의 전후 양측에는 내향으로 돌출되되 상기 제1하부경사면(14)에 대향되는 측면이 제1하부경사면(14)과 동일한 경사도를 가지도록 동일한 방향으로 경사진 제1경사지지면(18)으로 이루어지는 지지턱(16)이 형성되며, 상기 상부케이스(20)의 좌우 측면은 상향으로 갈수록 외측으로 돌출되게 경사진 상부경사면(24)으로 이루어져서, 상기 하부케이스(10)의 수용공간(12)에 수용되는 제과류가 상기 제1경사지지면(18) 및 제1하부경사면(14)에 지지되어 경사지게 포장되는 것을 특징으로 한다.
Patent KR-200495884-Y1 (KR)
IPC: B65H35/00
Filed: 2020-11-27
Granted: 2022-09-08
Abstract: 본 고안은 물 접촉에 의해 점착력을 갖는 종이 재질의 물검테이프를 일반 테이프 디스펜서와 같이 간편하게 사용할 수 있도록 하여 박스 포장의 간편성은 물론 박스 폐기시 일일이 박스에서 테이프를 떼어내 분리해야만 되는 사용의 번거로움 및 불편성을 해소할 수 있도록 한 핸들형 물검테이프 디스펜서에 관한 것으로서, 그 구성은 길이가 긴 막대 형태를 이루고 수평 방향으로 서로 평행한 한 쌍의 디스펜서 프레임부A,B와; 상기 디스펜서 프레임부A,B 사이의 선단에 직교 방향으로 설치되고, 양단이 각각의 디스펜서 프레임부A,B 외측에 체결 고정되며, 전방측으로 향하는 톱니형 절단날을 갖는 물검테이프 절단부와; 상기 물검테이프 절단부의 후방측 디스펜서 프레임부A,B 사이에 회전 가능하게 설치되고, 수분 흡수 능력을 갖는 점착롤러와; 상기 함침로울러의 후방측 디스펜서 프레임부의 후단부에 회전 가능하게 설치되고, 물과 접촉하면 점성을 갖는 종이 재질의 물검테이프가 권취된 물검테이프 권취롤과; 상기 물검테이프 권취롤을 디스펜서 프레임부에 회전 가능하게 지지하는 권취롤 지지부와; 상기 물검테이프 권취롤로부터 물검테이프 절단부 측으로 인출된 물검테이프의 하부가 함침로울러의 상부에 접촉하면서 지나간 후 다시 물검테이프 절단부의 톱니형 절단날의 하부를 통과할 수 있게 안내하는  가이드부; 로 이루어진 것이다.
Patent KR-200497150-Y1 (KR)
IPC: E02F9/08
Filed: 2021-02-04
Granted: 2023-08-17
Abstract: 본 고안은 물 저장부의 회전시 암부재의 회전을 안내하는 회전안내축에 간섭받지 않고, 물 저장부가 상향으로 회전된 상태에서 고정부재를 통해 저장통을 회전된 상태로 유지하며 물 저장부가 하향으로 복귀될 때 쇼바의 작동으로 급격한 회전을 방지하므로 안정적으로 사용할 수 있는 작업용 로더의 물 공급장치에 관한 것이다.
Patent PH-22013000584-Y1 (PH)
Title: Sweet potato yoghurt beverage
Inventor: BOTANGEN ESTHER T
IPC: A23C9/133
Filed: 2013-11-21
Abstract: The utility model provides a consumer acceptable composition of matter for sweet potato yoghurt beverage. The formulation consisting of 81 pcnt yoghurt base by weight and 19 pcnt sweet potato component by weight attained the highest acceptability rating.
Patent PH-22018000150-Y1 (PH)
Title: A process of producing calamondin (citrofortunella microcarpa) - carrot (daucus carota) shelf-stable ready-to-drink juice
Inventor: MILAN LEA B
IPC: A23L2/44
Filed: 2018-03-01
Abstract: This utility model generally relates to the process of producing calamondin (Citrofortunella microcarpa) and carrot (Daucus carota) ready to drink juice. This is to provide solution on the quality problems such as limited product shelf life at room temperature , thin mouthfeel/body and settling/separation of fruit and vegetable fibers from the juice. A formulation of water, calamondin (Citrofortunella microcarpa) extracts and carrot (Daucus carota) extracts, containing a combination of sodium citrate and sodium benzoate, gum Arabic (based on the total weight of mixture) and adjusting the beverage total soluble solids to 12 to 13 degree brix and pH below 3.85 - 4.50; pasteurization of the mixture at 75-80 degree Celsius for 10-15 minutes; and the application of hot filling process wherein the composition is filled and sealed in food grade bottles and subjecting to rapid cooling at 30-35 degree Celsius using potable running water.
Patent BR-202013006190-Y1 (BR)
Title: mecanismo de tração acionado por pedais e transmitido através de coroas e pinhões para duas rodas ou mais em veículos de brinquedo
Inventor: OSVALDO HECTOR VACINALETTI
IPC: B62M1/00
Filed: 2013-03-15
Abstract: mecanismo de tração acionado por pedais e transmitido através de coroas e pinhões para duas rodas ou mais em veículos de brinquedo. tratou o presente requerimento de modelo de utilidade, a um mecanismo, desenvolvido para facilitar o deslocamento realizado pela tração desenvolvida pela criança através da força aplicada nos pedais, em veículos como motocicletas ou carrinho de brinquedo. no qual é formado por uma base (4) de apoio para o eixo (5) da coroa do pedal (6) engrenada ao pinhão do pedal (7), para transmissão da força propulsora giratória para os eixos das rodas (12 e 12a).
Patent BR-202015000123-Y1 (BR)
Title: disposição construtiva introduzida em dispositivo acionador
Inventor: TOKIO ISOBATA
IPC: A41D13/018
Filed: 2015-01-05
Abstract: disposição construtiva introduzida em dispositivo acionador, o uso de motocicletas como veiculo de transporte se torna cada vez mais popular, levando em conta o consumo de combustível, e a facilidade de locomoção no trânsito das grandes cidades.os motociclistas utilizam capacete de proteção, e algumas vezes jaquetas de couro, não levando em consideração que em grandes impactos pode haver sérios ferimentos internos e externos por conta da violência do impacto.assim foram desenvolvidos sistemas que visam proteger o motociclista desses impactos, nesse documento a disposição construtiva introduzida em dispositivo acionador é constituída por um cilindro metálico que armazena o gás carbônico comprimido, que quando perfurado tem como objetivo insuflar as bolsas de ar de forma rápida a fim de proteger o motociclista de quedas e impactos.
Patent BR-202015026691-Y1 (BR)
Title: disposição construtiva introduzida em compressor alternativo incluindo bomba de óleo lubrificante
Inventor: ADILSON LUIZ MANKE
IPC: F16N7/36
Filed: 2015-10-21
Abstract: DISPOSIÇÃO CONSTRUTIVA INTRODUZIDA EM COMPRESSOR ALTERNATIVO INCLUINDO BOMBA DE ÓLEO LUBRIFICANTE. O presente modelo de utilidade pertence ao campo tecnológico de compressores alternativos e, particularmente, detalhes construtivos de bombas de óleo lubrificante de compressores alternativos. Problema a ser resolvido: Atualmente, o processo industrial de montagem do eixo rotativo do compressor em seu respectivo rotor acaba por deformar os canais pelos quais o óleo lubrificante é bombeado do fundo da carcaça do compressor alternativo para os elementos móveis que integram a unidade funcional de compressão do compressor alternativo. Esta deformação tem por principal causa a interferência mecânica entre os corpos. Resolução do problema: É revelada uma disposição construtiva introduzida em compressor alternativo incluindo bomba helicoidal de óleo lubrificante onde o eixo rotativo compreende pelo menos uma região inferior e pelo menos uma região intermediária. Na região inferior do eixo rotativo, o óleo lubrificante é bombeado por um canal interno ao eixo rotativo e na região intermediária do eixo rotativo, o óleo lubrificante é temporariamente armazenado e transferido, para a região de mancalização do eixo rotativo. A região de cooperação entre o pino de contenção e o eixo rotativo limita-se à região inferior; Adicionalmente, a região inferior do eixo rotativo compreende (...).
Patent BR-202018002981-Y1 (BR)
Title: Roda flexível para carrinho de mão com banda de rodagem plana
Inventor: ALEXANDRE SANTOS TUROZI
IPC: B29D30/00
Filed: 2018-02-16
Abstract: Trata-se de roda flexível constituída por três anéis concêntricos: o anel externo (1), o anel intermediário (2) e o anel interno (3), caracterizada pelo anel externo (1) compreender a banda de rodagem (11) e o corpo anelar amortecedor de impacto (12) e a banda de rodagem (11) possui secção plana escalonada desde um ressalto central (111) até as bordas externas da banda de rodagem (11), e o ressalto central (111) se estender ao longo de toda a banda de rodagem (11), e o ressalto central (111) ser a linha de maior diâmetro centrada no meio da banda de rodagem (11), e ao longo das superfícies laterais da banda de rodagem (11), junto às bordas externas da banda de rodagem (11), ter sequência de rebaixos (112), que reduzem a espessura do material flexível que constitui o corpo da banda de rodagem (11), e o anel externo (1) compreende ainda o corpo anelar amortecedor de impacto (12) posicionado adjacente à banda de rodagem (11) e o corpo anelar amortecedor de impacto (12) possui furos cegos (121) transversais e intercalados, de modo que a abertura (122) dos furos cegos (121) são ora de um lado da roda flexível ora é do outro lado da roda flexível, e a parede do fundo (123) de cada furo cego (121) está contida em plano perpendicular ao eixo da roda, e o (...).
Patent BR-202018073124-Y1 (BR)
Title: Suporte para rebatimento de painel veicular
Inventor: ANDREA MARIA DE SOUSA GONTIJO
IPC: B60K37/00
Filed: 2018-11-09
Abstract: suporte para rebatimento de painel veicular, trata-se de um dispositivo que funciona como suporte para o cilindro hidráulico, e pode ser fixado em diversos pontos do veículo, conjuga a função de facilitar a execução de manobras técnicas empregadas nas operações de resgate que envolve acidentes automobilísticos com vítimas, sendo utilizado para aumentar a área de contato da força do cilindro hidráulico com o painel veicular e/ou demais partes do veículo auxiliando no seu rebatimento.  suporte para rebatimento de painel veicular é feito em aço e constituído por (1) garra, (2) barra de união, (3) barra de apoio.
Patent BR-202019003119-Y1 (BR)
Title: Disposição construtiva aplicada em grelha para churrasqueira
Inventor: IRAN DE ALCANTARA
IPC: A47J37/07
Filed: 2019-02-15
Abstract: "DISPOSIÇÃO CONSTRUTIVA APLICADA EM GRELHA PARA CHURRASQUEIRA" O presente pedido de modelo utilidade refere-se uma disposição construtiva aplicada a uma grelha para churrasqueira voltada para a atividade de preparo de alimentos grelhados a qual foi dada original construção com vista a melhorar a sua utilização em diferentes larguras de churrasqueiras, revestindo de características próprias e dotadas com requisitos fundamentais de novidade e ato inventivo, fazendo resultar em uma série de vantagens técnicas, práticas e econômicas. De posse dos 03 (três) itens que montam a grelha ( 01) para sua utilização o churrasqueiro terá 02 (duas) possibilidade para a sua montagem, uma na versão mais larga e a outra na forma mais estreita.
Patent IT-224345-Z2 (IT)
Title: Lavello
IPC: E03C/
Filed: 1991-04-26
Granted: 1996-03-14
Abstract: Lavello presentante uno o più bacini o vasche in cui almeno un bacino o vasca comprende uno spallamento intermedio previsto su buona parte della parete o pareti del o di ciascun bacino o vasca per accogliere e supportare amovibilmente un accessorio di lavoro, quale una griglia, un cestello od un tagliere.
Patent CR-8535-A (CR)
Title: Sales de o-desmetilvenlafaxina en multiparticulas y usos de las mismas
Inventor: CHRISTOPHER RICHARD DIORIO
IPC: A61P1/00
Filed: 2006-07-25
Abstract: Se describe un succinato o formiato de O- desmetilvenlafaxina en multiparticulas (ODV); tambien se describen metodos para tratar depresion y reducir los efectos secundarios gastrointestinales de ODV.
Patent DK-5689-A (DK)
Inventor: SCHUMACHER WOLFGANG
IPC: C07C211/18
Filed: 1989-01-06
Abstract: 1,2-Bis(aminomethyl)-cyclobutane-platinum complexes having an anti-tumor activity.
Patent GB-479097-A (GB)
Title: Improvements relating to electric circuit breakers having arc-suppressing means
IPC: H01H9/44
Filed: 1936-07-29
Abstract: 479,097. Arc - rupturing in switches. ELLISON, Ltd., G., and ANDERSON, J. July 29, 1936, No. 47/38. Divided out of 478,890. [Class 38 (v)] A circuit-breaker of the type having auxiliary fixed and pivotal contacts in parallel with main fixed and pivotal contacts b, o and arranged to separate after the main contacts, and having associated with the auxiliary contacts an electromagnetic arc-suppressor having parallel plates between which the arc can be whirled and extinguished, has two (or more) non-magnetic metal plates h, i on one end of the core d of the electromagnet e; the plate h serving as fixed auxiliary contact and the plate (or plates) i being formed at one side of the centre with an aperture k through which the auxiliary contact l can pass. The space between the plates h, i is closed by fireproof insulating rings to form a narrow annular chamber. Winding e is connected to contacts b, h by leads f, g, respectively. Contact l is mounted on lever q on a part r on the lever p carrying main contact o, and is urged by spring s so as to remain in contact with h after o separates from b, and if desired a wiper contact may be provided to bear against plate i long enough to allow extinction of the arc in the chamber, the latter being effected by the radial magnetic field set up by the electromagnet. Where no wiper contact is provided, any arc that persists after contact l has left the chambers will be rotated by the field in the same way as the arcs in the chambers. U.S.A. Specification 2,027,219 is referred to.
Patent GB-931197-A (GB)
Title: Improvements in pumps, and in particular fuel injection pumps, having opposed pistons and a rotary distributing valve element
IPC: F02M41/06
Filed: 1961-01-02
Abstract: 931,197. Fuel injection pumps. P. E. BESSIERE. Jan. 2, 1961 [Jan. 8, 1960], No. 99/61. Class 102(1). A self-regulating rotary distributer pump, fed preferably by a gear pump 17, incorporates a shuttle 19, in the fixed part 1 of the pump, which is driven on its outward stroke by liquid delivered by auxiliary pistons 5a through a passage, Fig. 2 (not shown), opening an outlet conduit 28 for the liquid and also a discharge conduit 18 for the main pump delivery conduit 9, causing check valve 14 in the relevant one of the outlets 13 to fuel injectors to close. The return stroke of the shuttle is caused by a spring 29 and is resisted, preferably adjustably, by a throttle in an outlet passage, Fig. 3 (not shown), such that when the speed of the pump is above a given value the strokes of the shuttle are shortened and the fuel delivery is reduced. An annular cam 2 operating the pistons 5a may be adjustable angularly to vary the timing of injection. In a modification, Fig. 4 (not shown), the main pistons are provided with return springs, are mounted in the fixed part of the pump and are driven by a cam mounted on the driving shaft. Specifications 861,754 and 872,053 are referred to.
Patent JP-S63169170-A (JP)
Title: Automatic processor for plural original pictures in flat-bed scanning type picture scanning device
Inventor: KATSUYAMA MIKIZO
IPC: G03G15/36
Filed: 1987-01-05
Abstract: PURPOSE:To improve the operation rate of a picture scanning device by placing the large number of sheets of original pictures, the setting of set-up information of which has been completed, on an original picture feeding part. CONSTITUTION:The respective original picture 100, which is placed on the original picture feeing part 3 after the information is inputted by a set-up information setting device 1, is fed to an original picture scanning part in a regular turn from the one charge preceding others, and is processed by a first-in first-out system. Accordingly, by performing successively the setting process of the set-up information of the plural number of the original pictures 100, and by only placing the said original pictures 100 on the topmost part of a receiving plate 26 at every time of the above-mentioned process, the respective original picture 100 is automatically scanned on the basis of the required set-up information, and a picture signal for recording a desired duplicated picture is outputted. Thus, the operational efficiency of a scanning and recording device can be improved.
Patent JP-H06198468-A (JP)
Title: Laser beam machine
Inventor: KOIZUMI TOSHIRO
IPC: B23K26/00
Filed: 1993-01-04
Abstract: PURPOSE:To improve machining efficiency and machining accuracy, and to perform a stable working by providing a pulse waveform controller arbitrarily delaying the rising speed of a pulse wave outputted from a laser oscillator. CONSTITUTION:An NC device 1 controlling a laser beam device, a pulse waveform controller 3 commanding a pulse waveform corresponding to the contents of a working, and a laser power supply 5 supplying a pulse current, are provided. This machine is constituted of a laser oscillator 7 generating a pulse beam and a working table 9 on which a material to be worked is loaded, which freely moves it in the XV direction, etc. By this device, the rising speed of a pulse wave outputted from the laser oscillator 7 is arbitrarily delayed corresponding to the contents of a working. Thus, the generation of plasma and splashed matters is controlled, and the machining efficiency and the machining accuracy of a laser beam machine are improved.
Patent YU-1390-A (YU)
Title: Postupak za povećanje metalnih čestica u prašini iz kupolnih peći
Inventor: GUT K
IPC: F27B1/00
Filed: 1990-01-04
Abstract: POSTUPAK ZA POVEĆANJE METALNIH ČESTICA U PRAŠINI IZ KUPOLNIH PEĆI, pronalazak se odnosi na postupak za povećanje čestica metala u prašini iz kupolnih peći, kod koga su čestice prašine sakupljene u uredjaju za filtriranje, pri čemu se u kupolnoj peći izaziva reakcija izmedju čestica metala i kiseonika radi stvaranja oksida koji se sakupljaju u uredjaju za filtriranje i ponovo uvode u kupolnu peć.
Patent AT-A40392-A (AT)
Inventor: GOESCHL REINHARD ING
IPC: B09B1/00
Filed: 1992-03-03
Abstract: The invention relates to an arrangement for odour stabilization of waste dumps, wherein an oxygen-containing gas is blown via introduced lances into the waste dump, lances 3 or 2 for extracting waste dump gas being provided in addition to the lances 2 or 3 respectively for blowing the oxygen-containing gas in, and a container 4 or 5 containing rotting biological material is provided upstream of the lances 2 or 3 for blowing the oxygen-containing gas in, and a container 5 or 4 containing rotting biological material is provided downstream of the lances 3 or 2 for extracting waste dump gas.
Patent AT-A55794-A (AT)
IPC: A47J17/02
Filed: 1994-03-15
Abstract: PCT No. PCT/EP95/00743 Sec. 371 Date Nov. 15, 1995 Sec. 102(e) Date Nov. 15, 1995 PCT Filed Mar. 1, 1995 PCT Pub. No. WO95/24850 PCT Pub. Date Sep. 21, 1995A peeling device for fruits has a housing (1) with a knife opening (16) in the surface (18) for a peeling knife (15) with a knife-edge (17) that projects above the top side (18) of the lid (4). The peeling knife (15) is connected to an oscillating arm (13) that protrudes through an opening (14) in the container (1) and connects to an electrical drive unit (8) that is located in a housing (5) that is connected to the side of the container (1). The position of the electrical drive unit (8) in the housing (5) and consequently the length by which the knife-edge (17) projects above the surface (18) of the container lid (4) is adjustable via a worm gear (11) with a thumb screw (12). A fruit shown as a circle (19) is peeled by the oscillating movements of the knife (15) while being moved along the surface (18) of the lid (4).
Patent CR-11439-A (CR)
Title: Composiciones para inhalacion comprendiendo acido montelukast y un inhibidor pde-4 o un corticosteroide inhalado
Inventor: THIBERT ROCH
IPC: A61K31/47
Filed: 2010-05-18
Abstract: La presente invencion proporciona composiciones para inhalacion que comprenden acido montelukast y un segundo agente activo seleccionado de un inhibidor de PDE-4 y un corticoesteroide inhalado.
Patent DK-20187-A (DK)
Inventor: ISMAIL IBRAHIM A
IPC: C12Q1/28
Filed: 1987-01-15
Abstract: A stable test device for the determination of a peroxidatively active substance comprising a carrier containing 1,4-diisopropylbenzene dihydroperoxide and a benzidine indicator in a molar ratio of from 0.9 to 3.0. The composition can be incorporated with a carrier matrix with a ferric chelate to provide ascorbate resistance, important in a urine test for occult blood. The test device is stable under storage and heat stress and can be used to prepare a multitest strip containing a glucose test based on a peroxidase/potassium iodide indicator system.
Patent DK-54886-A (DK)
Inventor: BUSK PER
IPC: A01J/
Filed: 1986-02-05
Abstract: In order to achieve a well-defined size of pressed cheese, it is important that the cheese coagulum when laid out in a prepressing tub 2 be laid with great evenness, and it is advantageous to lay out the coagulum by using a distributing tank 20, which is brought forward and backward over the tub, while the delivered mixture of whey and coagulum leaves the tank over a spill edge 22. Under the influence of the turbulence during delivery of the mixture, among other things, it is possible for non- uniform overflow conditions to occur along the spill edge 22, and this is prevented according to the invention in that a rotating exit roll 28, 48 is arranged between the delivery region and the spill edge, in whose depressions 30 the mixture can become evenly distributed during transport to the spill edge 22. <IMAGE>
Patent EG-18277-A (EG)
Title: Method for the removal of cadmium from acid phosphate containing aqueous media
IPC: C01G11/00
Filed: 1987-04-28
Granted: 1992-12-30
Abstract: Cadmium is removed from an acid, phosphate-containing aqueous medium with the aid of an anion exchanger, in which process, during the removal, iodide or bromide ions are present in a quantity of 100-6000 ppm calculated with respect to the acid phosphate-containing aqueous medium.
Patent GB-694208-A (GB)
Title: Improvements in or relating to electromagnetic light current contact making relays
Inventor: FOULKES CHRISTOPHER HENRY
IPC: H01H51/12
Filed: 1951-01-03
Abstract: 694,208. Electromagnetic relays. STANDARD TELEPHONES & CABLES, Ltd. Dec. 20, 1951 [Jan. 3, 1951], No. 242/51. Class 38 (v) A light-current relay has fixed contacts 2, 3 of magnetic material sealed into two parallel glass buttons 8, 9 which form boundaries of a sealed enclosure and are separated by an annular spacer 15 from which projects a slightly narrower resilient finger 1 forming the armature and movable contact. The buttons 8, 9 are sealed to sleeves 10, 11 make like armature and contacts 2, 3 of a nickel iron cobalt alloy and operating coils 18, 19 surround the rods 2, 3. In the form shown in Fig. 5, flanged discs 20, 21 of magnetic material insulated from the sleeves 10, 11 and from the rods 2, 3 complete magnetic circuits and the armature moves one way or the other according to the difference in the currents in the two coils 18, 19. In Fig. 6, the above discs are replaced by permanent magnet discs 22, 23 magnetised from centre to perimeter in the same sense, as shown, or alternatively in the opposite sense. The armature moves one way or the other according to the polarity of the exciting current. The spacer 15 may be made of the requisite thickness by electro deposition of copper on the annular extension of the armature and the contacts may have a coating of gold or rhodium on their nickel-iron-cobalt base.
Patent GB-1211991-A (GB)
Title: Immersion burner
Inventor: GRINKO IVAN DMITRIEVICH
IPC: F23M11/04
Filed: 1969-01-02
Abstract: 1,211,991. Submersible burners. GOSUDARSTVENNY NAUCHNO - ISSLEDOVATELSKY I PROEKTNY INSTITUT OSNOVNOI KHIMII. 2 Jan., 1969, No. 276/69. Heading F4T. In an immersion burner, e.g. for concentrating sulphuric acid or thermally decomposing fused salts, a tube 4 and a concentric inner pipe 9 with helical blades 10 on its outer surface both supply a gas-air mixture, from mixers 3 and 11 respectively, to a refractory lined combustion chamber 1, to produce respectively a peripheral swirling flow and a straight through flow therein, thus providing a more uniform distribution of thermal loads and longitudinal flow velocities through the chamber than is provided with either flow separately. The mixer 3 comprises a gas inlet 7 leading to a chamber 6 connected to the tube 4 by staggered openings 8, and air flows through the tube past a flow divider 5. Gas is similarly introduced to pipe 9 from a chamber 12, with air flowing through the pipe from a chamber 13, above which is located a viewing port 18. On starting the burner, using a spark-plug 16, only the pipe 9 is used until the lining 2 of chamber 1 is hot enough to ignite the peripheral flow from tube 4. An air excess factor of 1 to 2À5 gives steady operation and combustion temperature controllable within the range 1000-1800‹ C.