baber/WOPTO huggingface dataset:
Patent KR-200489820-Y1 (KR)
IPC: C25F7/00
Filed: 2019-06-25
Granted: 2019-08-14
Abstract: 본 고안은 선재 코일 제품의 굵기와 종류에 따라 간격조절 전극부재를 상부 또는 하부 방향으로의 위치 조정이 가능하므로 산세 작업을 극대화시킬 수 있고, 또한 선재 코일을 전해산세 처리시에 선재코일거치 회전봉을 이용하여 선재 코일을 회전시킴으로써, 선재 코일의 전부분을 균일하게 산처리 작업이 가능한 것을 특징으로 하는 선재 코일 전해산세용 걸이대에 관한 것이다. 
그리고, 본 고안은 선재 코일에 간격 조절용 전극부재를 근접시켜 전해산세가 가능하므로 종래의 장치에 비해 전기 소모량이 적어 저밀도의 정류기 사용이 가능하고, 작업시간을 단축할 수 있으며, 산세처리의 효율이 높으므로 생산성이 향상되며, 선재 코일의 전해산세 처리시에 종래의 장치에서 사용하는 산처리액에 비해 산의 농도의 낮은 산처리액을 사용할 수 있으므로, 작업장에서 발생하는 염산 가스 등의 발생량을 줄여 작업환경의 고질적인 문제점을 해결할 수 있을 뿐만 아니라 작업장에서 발생하는 폐수의 오염부하량을 감소시킬 수 있으므로 처리비용을 낮출 수 있어 경제성이 높은 효과가 있다.
Patent KR-200493625-Y1 (KR)
IPC: A44B11/00
Filed: 2020-01-13
Granted: 2021-05-04
Abstract: 본 출원은 허리버클 어셈블리 및 허리버클 어셈블리와 연동되는 연결베이스를 포함하는 퀵-어셈블리 허리버클을 개시한다. 상기 허리버클 어셈블리는 전면패널 및 일단부에 전면패널과 힌지로 연결되는 후면패널을 포함한다. 상기 전면패널은 외부로 연장되어 연결블록이 형성되고, 연결블록의 상단에는 장착홀이 형성되며,  연결베이스 내부에는 개폐버튼과 슬라이딩 잠금블록이 설치되며, 잠금블록의 잠금부는 상기 연결블록의 장착홀을 통과하여 연결블록을 연결베이스에 장착하고 상기 개폐버튼은 잠금블록을 누르고 상기 잠금부가 연결블록의 장착홀에서 분리되는데 사용된다. 상기 잠금블록과 연결베이스 사이에는 리셋용 탄성구성품이 설치되어 있으며, 상기 탄성구성품은 항상 상기 개폐버튼을 향한 잠금블록에 압력을 제공한다. 본 출원의 퀵-어셈블리 허리버클은 연결베이스와 연결블록을 사용하여 허리버클의 신속한 장비를 실현할 수 있으며, 동시에 연결베이스는 다양한 툴과 매칭될 수 있으며 다양한 작업환경에서 널리 사용될 수 있다.
Patent KR-200494477-Y1 (KR)
IPC: B65D75/58
Filed: 2020-04-08
Granted: 2021-10-20
Abstract: 개시된 내용은 리브 또는 탄성돌기가 구비가 구비된 덮개부가 고정부와 결합될 때 개방구를 통해 그 일부가 인출된 물티슈를 케이스 내부방향으로 가압해 인입되게 함으로써 밀폐력이 향상되게 하여 물티슈의 수분유실이 방지되게 한 개선된 밀폐력을 갖는 물티슈 케이스용 커버에 관한 것이다. 
개시된 내용의 일 실시 예에 따른 개선된 밀폐력을 갖는 물티슈 케이스용 커버는 물티슈 케이스의 인출구 가장자리에 부착되며 내측에는 물티슈가 인출될 수 있도록 상기 인출구와 연통되는 개방구가 형성된 고정부와, 상기 고정부와 회동가능하게 연결되며 회동 여부에 따라 상기 고정부와 결합되어 상기 개방구가 개폐되게 하는 덮개부와, 상기 덮개부 일면에 상기 개방구 방향으로 돌출 구비되어 상기 덮개부가 상기 고정부에 결합될 시에 상기 개방구를 통해 그 일부가 인출된 물티슈를 케이스 내부 방향으로 눌러 가압되게 하는 링 형상의 리브가 포함된다.
Patent KR-200494864-Y1 (KR)
IPC: F16L37/084
Filed: 2020-08-31
Granted: 2022-01-13
Abstract: 본 고안의 유압 커넥터 어셈블리용 분리 공구는, 힌지부, 힌지부로부터 일측으로 연장되는 머리부 및 힌지부로부터 타측으로 연장되는 손잡이부를 포함하는 몸체; 몸체의 머리부의 선단으로부터 몸체의 길이방향으로 돌출되며, U자형 홈이 형성되는 제1 팁부; 및 몸체의 머리부의 일측면 상으로부터 돌출되며, U자형 홈이 형성되는 제2 팁부를 포함하며, 손잡이부의 조작에 의해 머리부가 벌림 및 오므라짐 동작을 수행하며, U자형 홈의 내주면은 후크의 끝단부의 외주면과 접촉 결합되면서 맞물리며, 이에 의해 제1 팁부 또는 제2 팁부가 유압 커넥터 어셈블리의 결합된 바디 및 어댑터를 분리할 수 있다.
Patent KR-200496331-Y1 (KR)
IPC: A62B18/08
Filed: 2021-08-23
Granted: 2023-02-09
Abstract: 본 고안은 사용자의 코와 입을 가리도록 간편하게 탈착할 수 있는 점착 마스크에 관한 것이다. 
이러한 본 고안은, 착용자의 안면을 가려서 덮는 마스크에 있어서, 착용자의 콧등에 걸려서 밀착되는 콧등밀착단과 그 좌우의 뺨에 밀착되는 뺨밀착단 및 그 아래의 입 주변에 밀착되는 입밀착단이 연속 곡률로 이어지게 형성된 마스크본체; 상기 마스크본체의 어느 한 밀착단에 접합되어 착용자의 안면에 탈착되는 점착돌기;를 포함하는 것을 기술사상으로 한다. 
따라서, 본 고안은 귀걸이밴드가 없는 형태의 마스크를 점착식으로 착용자의 안면에 밀착되게 간편히 부착할 수 있으므로 마스크를 반드시 착용해야 하는 미용실 따위를 포함하는 다중이용시설에서 귀걸이밴드의 간섭으로 인한 사용자의 불편함을 해소할 수 있는 매우 유용한 효과가 있다.
Patent KR-200497533-Y1 (KR)
Title: 가축 질병 모니터링 서버
IPC: G06Q50/02
Filed: 2021-10-15
Granted: 2023-12-07
Abstract: 본 고안은 가축 질병 모니터링 서버에 관한 것으로, 특히 축사 내에 설치된 열화상 카메라, 비전 카메라 및 축사 내부 환경 감지부로부터 열화상 데이터, 축사 내 영상 데이터 및 축사 내부 환경 데이터를 수집함과 아울러 기상청 서버로부터 외부 환경 데이터를 수집하여 사용자 단말에 실시간으로 제공하고, 열화상 데이터 및 축사 내 영상 데이터를 AI(Artificial Intelligence) 분석하고 축사 내부 환경 데이터 및 외부 환경 데이터를 빅데이터 분석한 후 두 분석 결과를 기초로 가축 건강상태를 종합적으로 분석하고 그 결과를 사용자 단말에 제공하는 가축 질병 모니터링 서버에 관한 것이다.
Patent PH-22018000679-Y1 (PH)
Title: Composition of santol-balimbing chews
Inventor: CAPILOS LIBERATA A
IPC: A23G3/48
Filed: 2018-07-13
Abstract: The present utility model is a composition of santol-balimbing "chews". The tropical fruits were combined with sugar. Boiling, spreading, cooling and cutting into bite-sized pieces followed. The confection produced by the present process has a chewable texture with high degree of acceptability among consumers which suggests opportunity for commercialization.
Patent PH-22018050436-Y1 (PH)
Title: Process of producing moringa-fortified rice
Inventor: PALILIO III VICENTE E
Filed: 2018-10-22
Abstract: Disclosed is a process of producing rice grains enriched with the moringa so that the nutrients present in moringa would fortify the rice grains making it more nutritious. The white rice grains being mixed or combined with moringa-fortified rice grains that is produced by combining powdered white rice with moringa and being extruded forming the moringa-fortified rice grains.
Patent JP-2605451-Y2 (JP)
IPC: B65G17/40
Filed: 1993-04-20
Granted: 2000-07-17
Abstract: Conveyor chain, including multiple links that are shaped like a sort of fork (3) whose aperture is closed, from the active part of the link, by a monolithic plate (4), and where said links are connected by pins (5) that are situated transversally to the arms (31) of said forks, and that are inserted into the respective seats (7) of articulation and oscillation situated on the crosspieces (30) of said forks, and said pin (5) has a partially cylindrical shape, while said seat (7) has a central narrowing (71) that faces the non-cylindrical part of said pin (5). <IMAGE>
Patent JP-2511561-Y2 (JP)
IPC: F16B21/00
Filed: 1992-10-28
Granted: 1996-09-25
Abstract: There is disclosed a connecting pin (1) having a body (9) of great strength which will not come out of position when locked and will not foul during insertion and removal. In the connecting pin, a flange (10) for locking is provided on the rear end of a column-like body (9); an elongate hole (11) is formed through the shank part on the forward end side of the body (9); a shaft (12) is inserted in the shank part on the forward end side of the body in a direction intersecting the elongate hole (11); two opposed holes (17) are formed parallel to this shaft; a lock piece (13) is rotatably supported on the aforesaid shaft at a midway point and having a plurality of recesses (16); and in the hole is inserted a positioning member which selectively engages in one of the recesses. <IMAGE>
Patent GB-207404-A (GB)
Title: Elastic tires for vehicles
IPC: B60C7/10
Filed: 1923-01-01
Abstract: 207,404. Mundhass, B., and Wolff, S. Jan. 1, 1923. Non-metallic elastic cores; tyre attachments to rims. -An outer cover of the type having a space between the beaded edges encloses a separable solid elastic filler body 6 having a reduced flange or neck portion 12 extending into the space between the beaded edges, so that when these edges are drawn together the flange or neck is compressed. The detachable rim may be composed of segmental members 8, 9 clamped by bolts to a flange 11 secured to the main part of the rim.
Patent GB-807522-A (GB)
Title: Improvements in or relating to snap-action electric switches
IPC: H01H13/28
Filed: 1955-01-01
Abstract: 807,522. Retractive switches; snap-action switches. HULBERT, C. LACY-. Dec. 29, 1955 [Jan. 1, 1955], No. 5/55. Class 38 (5). A snap-action switch comprises a bowed, contact-carrying blade 26 held under end compression by springs 32 and fixed by a screw or rivet 37 to the insulating head 24 of a plunger 20. Depression of the plunger causes the blade to snap through a dead-centre position so that contacts 28 disengage fixed contacts 13 and engage contacts 12. The switch may be retractive in which case the plunger is returned by a spring 35 as shown, or by a spring disposed round the upper end of the plunger. Alternatively the blade may be returned (a) by pulling the plunger, (b) by a second plunger disposed beneath the blade. The two springs 32 may be replaced by a single central spring moving through a longitudinal aperture in the blade. The fixed contacts 12, 13 and terminals 11 are mounted in an inner casing 10 inside an outer casing 15. The plunger may be wholly of insulating material. The arrangement may be used as a limit switch.
Patent CR-6148-A (CR)
Title: Bloques de concreto decorativo para muros de retencion y procedimiento para su instalacion
Inventor: CARLOS GUILLERMO RODRIGUEZ VASQUEZ
IPC: E04B1/00
Filed: 2000-01-21
Abstract: Un elemento de concreto en forma de hexágono cuyas caras expuestas poseen un acabado rugoso que imita la piedra, por tener en la cara inferior una cejilla o saliente que permite el acople o amarre entre los elementos para conformar el muro o pared sin necesidad de mortero u otro tipo de adhesivos y permite la conformación de paredes lineales o curvas sin necesidad de realizar cortes en los elementos. Al instalarse un bloque sobre otro se forman paredes o muros con alturas hasta de un metro y cualquier longitud.
Patent CR-6670-A (CR)
Title: Preparacion de acelerador de concreto
Inventor: THOMAS HOFFMANN
IPC: C04B40/00
Filed: 2002-06-06
Abstract: Se refiere a un acelerador libre de alcali para concreto rociado, disolviendo sulfato de aluminio o hidroxido de aluminio amorfo en agua, que contiene opcionalmente una amina, y agregando opcionalmente al menos un estabilizador, seleccionado de acidos hidorxicarbocilicos y acidos fosforicos, y sales no alcalinas de los mismos, y al menos un agente de eliminacion de espuma.
Patent IS-6088-A (IS)
Inventor: DENSHAM DANIEL HENRY
IPC: C12N15/12
Filed: 2001-09-26
Abstract: The present invention pertains to a method for polynucleotide synthesis, comprising the steps of: (i) reacting a polynucleotide processive enzyme, e.g., a polymerase or TdT, with a nucleotide substrate under conditions suitable for enzyme activity; and (ii) modulating the conformation of the enzyme, e.g. using radiation, to allow incorporation of a predetermined nucleotide.
Patent JP-S5592883-A (JP)
Title: Air-cooled heat exchanger
Inventor: KOMATSU KIICHIROU
IPC: F28D1/04
Filed: 1979-01-05
Abstract: PURPOSE: To prevent freezing of inner fluid positively, by providing dampers at the air-inlet side of fan and making an efficient use of recirculated warm air.  
     CONSTITUTION: When only fan 6 is operated in winter or in a season when temperature is low and at the time of low-load operation when flow rate of inner fluid is low, with a first upper damper 8 being fully closed and a second upper damper 10 being partially opened, a portion of warm air B after use for cooling tube bundle 1 is recirculated to the air-inlet side of fan 6. Further, if a first lower damper 13 is closed fully, the warm recirculated air B can be made to flow into fan 6 without being scattered into ambient cool air. With such an arrangement, it is prevented that fluid flowing through the inside of tube bundle 1 is cooled excessively or freezed. 
     COPYRIGHT: (C)1980,JPO&Japio
Patent JP-S60144756-A (JP)
Title: Production of electrophotographic sensitive body
Inventor: KITOU SHIROU
IPC: G03G5/14
Filed: 1984-01-05
Abstract: PURPOSE:To obtain an electrophotographic sensitive body having a highly hard layer on the surface by coating a soln. prepd. by dissolving a resin for a surface coating layer into a medium which can dissolve an electric charge transfer material on the photoconductor laminated successively with the charge generating layer and charge transfer layer on a conductive base. CONSTITUTION:A layer deposited by evaporation with a dye such as azo pigment or the like is used for an electric charge generating layer and an electric charge transfer layer is formed by dissolving uniformly a low molecular charge transfer material into a resin. An arom. amine compd., etc. are used for the charge transfer material. The resin for a surface protective layer refers to an insulator of which the specific volume resistivity has about 10<15>OMEGAcm. The resin of which the specific volume resistivity decreases to 10<9>-10<14>OMEGAcm when reacting with the above-described charge transfer material and which has high surface hardness is used for said resin. The formed surface coating layer contributes to an increase in mechanical strength without spoiling the characteristics as the electrophotographic sensitive body. The electrophotographic sensitive body having the mechanical strength equiv. to the mechanical strength of an inorg. photosensitive body is thus obtd. by the simple stage.
Patent JP-H0316056-A (JP)
Title: Cassette type tape player
Inventor: OHASHI TAMAKI
IPC: G11B15/675
Filed: 1990-01-05
Abstract: PURPOSE:To securely perform an ejecting operation by providing a connecting part for connecting a holding plate and a detaining part for preventing the movement of a cassette in its ejecting direction and forming a distance from a turning fulcrum of a detaining part piece to the detaining part as longer than a distance from the turning fulcrum to the connecting part. CONSTITUTION:On the detaining part piece 29, the distance l from its turning fulcrum 30 to the detaining part 33 for detaining a slide part piece 8 is formed to be longer than the distance l' from the turning fulcrum 30 to a connecting point a with the holding plate 14. That is, a moving displacement amt. of the connecting part which moves to be displaced in accordance with the turning of the holding plate 14 becomes smaller than a moving displacement amt. of the detaining part 33. Consequently, even when the detaining part piece 29 is detained with the slide part piece 8, and an ejecting lever 4 is released by mistake from its pressing operation before the ejecting operation is sufficiently performed, the slide part piece 8 is kept prevented from moving back unless the holding plate 14 is horizontally turned. By this method, there is no fear that a cassette or the device is damaged.
Patent JP-S5385961-A (JP)
Title: Dust collector for electric cleaner
Inventor: SAGAWA KOUICHI
IPC: A47L9/10
Filed: 1977-01-05
Abstract: PURPOSE: To permit sanitary dust treatment of excellent handling properties by constructing a first dust collection chamber accommodating rough dust such that it can be closed and removably mounting a filter unit including a main filter in a dust case opening section. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent AT-A32898-A (AT)
Inventor: PONWEISER JOHANN ING
IPC: H01F27/32
Filed: 1998-02-24
Abstract: Multiple parallel conductor for an electrical machine and process. The conductor includes a plurality of adjacent subconductors combined to form a subconductor bundle having an outer surface with a plurality of contiguous surface sections arranged in a longitudinal direction, and a flat protective insulation covering at least one of the plurality of surface sections. At least one of the plurality of surface sections remains uncovered by the flat protective insulation covering. A mesh sheathing further covers the plurality of surface sections.
Patent AT-A54995-A (AT)
IPC: B21C47/06
Filed: 1995-03-27
Abstract: The invention concerns a strip winder comprising at least one pressure roller (2) which can be set against a winder mandrel (1) by means of an adjusting device (6) in order to press strip-form winding material (9) against the winding mandrel (1). To this end, the pressure roller (2) is mounted such that it can rotate on a mounting arm (3) and move relative to the winding mandrel (1) in an approximately radial direction. The mounting arm (3) can be moved towards and pressed against the winding mandrel (1) by means of the adjusting device (6). As the beginning of the strip (14) approaches, the pressure roller (2) can be moved by at least the strip thickness (16) away from the winding mandrel (1) by means of an adjusting device (12) controlled by a control device (15). In order to be able to carry out "step control" easily and with simple means, the pressure roller (2), in known manner, is movable relative to the mounting arm (3) by means of a further adjusting device (12) connected to the control device (15) which causes the pressure roller (2) to move away from the winding mandrel (1) as the beginning of the strip (14) approaches.
Patent AT-A58897-A (AT)
Inventor: URBANEK OTTO DIPL ING DR
IPC: B29C45/17
Filed: 1997-04-08
Abstract: In this C-frame pressure injection moulding machine, the outer ends of the frame limbs are pressed outwards under the closure forces. The platens associated with these limbs are held parallel with the aid of a novel system. A degree of flexure can occur about a horizontal axis, between at least one platen and the associated limb of the C-frame. A measuring unit continuously monitors the rotation or deformation occasioned in a hingeless articulation.
Patent CH-552061-A (CH)
Title: Antibiotic sl 21429 - used for treatment of oedema and ulcers and as immunodepressive drug
Inventor: CLOSSE A
IPC: A61P31/04
Filed: 1971-01-07
Abstract: The new cpd is prepd. by aerobic cultivation of a new strain of Chaetomium globosum Kunze ex Fries (NRRL 3877) pref. at 27 degrees C followed by isolation from the culture both filtrate and from the mycelliium.
Patent CR-11595-A (CR)
Title: Aparato para control de plagas
Inventor: BOLIN DAVID G
IPC: A01M1/20
Filed: 2010-07-26
Abstract: Un aparato para control de plagas; y uso de dicho aparato para controlar plagas. El aparato comprende una casilla hueca que forma por lo menos una entrada para las plagas que han de ser controladas.
Patent CU-34565-A (CU)
Title: Procedimiento para la preparación de aditivo para lubricante
Inventor: SHKOLNIKOV VICTOR MARCOVIC
Filed: 1976-08-24
Abstract: Un proceso para la preparación de un aditivo para aceites lubricantes que comprende, tratar sulfuro alquilfenol con un óxido o hidróxido de un metal alcalinotérreo en una corriente de dioxilo de carbono en presencia de un promotor y un disolvente orgánico, caracterizado porque el promotor comprende aminas de derivados conteniendo oxigeno de C2 -C20 orgánicos y/o metanol, y porque el proceso es llevado a cabo de 30--150sC.
Patent DK-19184-A (DK)
Inventor: BERGENWALL HENNING
IPC: A61G7/00
Filed: 1984-01-17
Abstract: The apparatus comprises a stand 1 and arms 5 which are arranged in a tiltable manner on the stand in order to support a bed frame or the like, a power mechanism 8 for tilting the arm 5, and a wedge 12 which can be inserted between parts of the stand and the arm in order to move these parts away from each other and thus tilt the arm upwards from the stand. The wedge 12 can be moved at right angles to the tilt axle 6 of the arm 5 and is connected to a stop 18 which is designed to contact a component 28 connected to the arm 5 after a certain initial insertion of the wedge between the parts 9, 10. <IMAGE>
Patent DK-64296-A (DK)
Inventor: HOEG HARRO ANDREAS
IPC: C22F1/10
Filed: 1996-06-07
Abstract: An exhaust valve for an internal combustion engine including a movable spindle with a valve disc which on its upper surface has an annular seat are of a material different from the base material of the valve disc. In the closed position of the valve the seat area abuts a corresponding seat area on a stationary valve member. The seat area on the upper surface of the valve disc is made of a material which has a yield strength of at least 1000 Mpa at a temperature of approximately 20° C.
Patent EG-20435-A (EG)
Title: Process for preparing of new active compounds of quinoline derivatives
IPC: C07D215/38
Filed: 1994-06-07
Granted: 1999-04-29
Abstract: PCT No. PCT/SE94/00552 Sec. 371 Date Jul. 1, 1994 Sec. 102(e) Date Jul. 1, 1994 PCT Filed Jun. 8, 1994 PCT Pub. No. WO94/29274 PCT Pub. Date Dec. 22, 1994The present invention relates to novel quinoline derivatives of the formula   <IMAGE>   which inhibit exogenously or endogenously stimulated gastric acid secretion and thus can be used in the prevention and treatment of gastrointestinal inflammatory diseases.
Patent GB-605675-A (GB)
Title: A new or improved transformer tapping or like switch
IPC: H01H19/56
Filed: 1946-01-03
Abstract: 605,675. Regulating switches. WYNNE, A. C. Jan. 3, 1946, No. 233. [Class 38 (v)] In a rotary switch suitable for transformer tap changing, a ball l mounted in an adjustable housing k co-operates with recesses m in a disccontact c to lift the contact finger j while it passes from one contact stud b to the next. The ball may also co-operate with studs in the disc c to form limit stops. The recesses m may be replaced by radial ribs on the disc, and the ball l and housing k by a peg.
Patent GB-161266-A (GB)
Title: Improvements in or relating to electric oscillation arcs
IPC: H03B11/08
Filed: 1920-01-03
Abstract: 161,266. Radio Communication Co., Ltd., and Binyon, B. Jan. 3, 1920. Discharge-gap apparatus.-Relates to means for preventing leakage of air into the are chamber of an oscillation generator during periods of inaction of the arc, and consists in the use of an auxiliary vaporizer which is independent of the arc and becomes operative to maintain the requisite pressure of hydrocarbon vapour whenever the pressure in the are chamber falls below normal. An independent heating-device may be employed to maintain the temperature of the arc chamber when the arc is not in use. As shown in Fig. 1, a fall of pressure in the arc chamber A causes alcohol or other liquid hydrocarbon to be fed along a pipe C on to a heating-coil B. A feed-device D and non-return valve F are employed. Alternatively the vaporizing-coil may be in a chamber communicating on the one hand with the alcohol supply and on the other hand through a non- return valve and a constricted pipe with the arc chamber, in which a heating-coil maintains the temperature during periods of disuse of the arc and prevents condensations. The heating-coil may be continual'y operative or may be switched in only when the arc is quenched. The coil B, Fig. 1, may be used for vaporizing during the normal working of the arc, in which case a dripfeed device delivers the hydrocarbon to the coil at a rate depending on the pressure in the chamber. A tap may be fitted for cutting off the dripfeed when the arc is out of operation.
Patent GB-1406142-A (GB)
Title: Adjustable viscosimeter
IPC: G01N11/12
Filed: 1973-01-03
Abstract: 1406142 Adjustable viscometer J VARADI AND T C EASTON 3 Jan 1973 304/73 Heading G 1S As a piston 24 is raised by lifting a rod 26, Figs. 1, 3, attached to an L-shaped bracket 28 having a cam follower 30 engaging a driven cam 32, a sample of the liquid to be tested is drawn from a reservoir or stream into the tube 16 through port 18. When the point 38 on the clockwise rotated cam reaches the follower 30 the piston 24 falls until halted by abutment of 28 with a switch lever 65. Thereafter the piston stays motionless until raised once again by the cam. The speed of the falling piston 24 or the rate of flow through the orfice 46 is inversely proportional to the viscosity and thus speed may be varied by operating a micrometer 76 to move the obturating rod 50 and alter the shape of the piston. When the piston is released, a cam 54 rotated with the cam 32 opens a switch 58, Fig. 3, and closes an electric power switch 60. During the time taken by the piston to fall and operate lever 65 and close switch 56 the cam 54 will close switch 58 at a fixed time interval after cam 32 has released the piston. It is arranged so that if the switch 58 closes before the piston can drop far enough to close 56, then one lamp 68, Fig. 5, will glow and a solenoid valve 70 will open. If however switch 56 closes before 58 then another lamp 74 will glow for the period of time the switch 58 logs 56. The third case has the switches 56, 58 closing together to light neither lamp. These three results act as indicators of the actual viscosity, and if valve 70 is operated then it could be used to control the addition of thinners to the fluid, whilst operation of the circuit 74 could be used to add thickeners. A reference viscosity is that which provides coincident closing of 56, 58, and for any given configuration of piston 24 there is only one such reference viscosity. The micrometer 76 can however alter this configuration by moving the rod 50. If, for each fluid tested, the micrometer 76 is adjusted so that 56, 58 close together, then the micrometer reading corresponds to the viscosity which can be determined from calibration tables. The falling piston or body may however be provided with adjustable vanes or the orifice of 16 could be made adjustable.