GB500892A - Improvements in and relating to apparatus for measuring the opacity of a liquid - Google Patents

Improvements in and relating to apparatus for measuring the opacity of a liquid

Info

Publication number
GB500892A
GB500892A GB27615/37A GB2761537A GB500892A GB 500892 A GB500892 A GB 500892A GB 27615/37 A GB27615/37 A GB 27615/37A GB 2761537 A GB2761537 A GB 2761537A GB 500892 A GB500892 A GB 500892A
Authority
GB
United Kingdom
Prior art keywords
liquid
plate
mark
lens
instrument
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB27615/37A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YACCO SAF
Original Assignee
YACCO SAF
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by YACCO SAF filed Critical YACCO SAF
Publication of GB500892A publication Critical patent/GB500892A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

500,892. Photometric apparatus. YACCO, S. A. F. Oct. 11, 1937, Nos. 27615 and 27616. Convention dates, Oct. 16, 1936 and Aug. 11, 1937. [Class 97 (i)] In apparatus for measuring the opacity of a liquid, in which a mark is observed through a variable thickness of the liquid and the thickness which is just sufficient to obscure the mark is determined, the mark is disposed on the foremost surface, visible to the observer, of the rear wall of the liquid receptacle. The apparatus is particularly intended for measuring the opacity of lubricating oil. Fig. 2 shows a form in which the liquid is contained in a wedge-shaped space between a glass plate 3 and the base'of a groove 2 formed in a metal plate 1 against which the plate 3 is held by a spring-urged stirrup 5. The marks to be observed through the liquid are formed on the plate 1, and consist of a number of lines 8 with which graduations may be associated. The stirrup 5 can be rotated about a pivot 20 to enable the apparatus to be dismantled for cleaning &c. In Fig. 5, the liquid is contained in the space between the plane upper surface of the plate 1 and the convex lower surface of a lens 3 which is held against the plate by a screw cap 17 and packing ring 25. The marks 8 consist of concentric circles on the plate 1. Connection 18, 19 are provided to enable the instrument to be inserted in an oil-circulation system, such as that of a motor-vehicle engine, the instrument then being mounted on the instrument-board of the vehicle. Fig. 13 shows a form in which the liquid is contained in the space between the plane lower surface of a plano-convex lens 3<1> and the plane upper surface of the member 1. The lens is mounted in a support 30 which screws on to the base 55 so that the thickness of the liquid layer can be varied by rotating the support. The rotational position of the support 30 is indicated on a scale. A single mark 8, which may be an arrow, is provided on the member 1. The lens 3<1> serves to concentrate light from a source 36 on the liquid.
GB27615/37A 1936-10-16 1937-10-11 Improvements in and relating to apparatus for measuring the opacity of a liquid Expired GB500892A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU202587X 1936-10-16
LU110837X 1937-08-11

Publications (1)

Publication Number Publication Date
GB500892A true GB500892A (en) 1939-02-17

Family

ID=26640393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27615/37A Expired GB500892A (en) 1936-10-16 1937-10-11 Improvements in and relating to apparatus for measuring the opacity of a liquid

Country Status (4)

Country Link
CH (1) CH202587A (en)
DE (1) DE677614C (en)
FR (1) FR827944A (en)
GB (1) GB500892A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695544A (en) * 1951-11-10 1954-11-30 Mortimer W Brenner Equipment for testing the flatness of objects
US2889736A (en) * 1954-08-17 1959-06-09 Edward M Borg Oil testing apparatus
US3084592A (en) * 1959-11-20 1963-04-09 Willard L Scott Pipette construction
US5289267A (en) * 1991-10-04 1994-02-22 Kms Fusion, Inc. Electro-optical system for gauging surface profile deviations
US5416589A (en) * 1991-10-04 1995-05-16 Kms Fusion, Inc. Electro-optical system for gauging surface profile deviations
US5463464A (en) * 1991-10-04 1995-10-31 Kms Fusion, Inc. Electro-optical system for gauging surface profile deviations using infrared radiation
US5465153A (en) * 1991-10-04 1995-11-07 Kms Fusion, Inc. Electro-optical system for gauging specular surface profile deviations
US5517575A (en) * 1991-10-04 1996-05-14 Ladewski; Theodore B. Methods of correcting optically generated errors in an electro-optical gauging system
WO2008023134A1 (en) * 2006-08-22 2008-02-28 Essilor International (Compagnie Generale D'optique) Apparatus for demonstrating anti-reflective coating of transparent surface

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486080A (en) * 1945-06-30 1949-10-25 Atlantic Refining Co Method and apparatus for testing oils

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695544A (en) * 1951-11-10 1954-11-30 Mortimer W Brenner Equipment for testing the flatness of objects
US2889736A (en) * 1954-08-17 1959-06-09 Edward M Borg Oil testing apparatus
US3084592A (en) * 1959-11-20 1963-04-09 Willard L Scott Pipette construction
US5289267A (en) * 1991-10-04 1994-02-22 Kms Fusion, Inc. Electro-optical system for gauging surface profile deviations
US5416589A (en) * 1991-10-04 1995-05-16 Kms Fusion, Inc. Electro-optical system for gauging surface profile deviations
US5438417A (en) * 1991-10-04 1995-08-01 Kms Fusion, Inc. Electro-optical system for gauging surface profile deviations
US5463464A (en) * 1991-10-04 1995-10-31 Kms Fusion, Inc. Electro-optical system for gauging surface profile deviations using infrared radiation
US5465153A (en) * 1991-10-04 1995-11-07 Kms Fusion, Inc. Electro-optical system for gauging specular surface profile deviations
US5517575A (en) * 1991-10-04 1996-05-14 Ladewski; Theodore B. Methods of correcting optically generated errors in an electro-optical gauging system
WO2008023134A1 (en) * 2006-08-22 2008-02-28 Essilor International (Compagnie Generale D'optique) Apparatus for demonstrating anti-reflective coating of transparent surface
FR2905183A1 (en) * 2006-08-22 2008-02-29 Essilor Int DEMONSTRATION APPARATUS FOR TRANSPARENT SURFACE ANTIREFLECTION COATING

Also Published As

Publication number Publication date
DE677614C (en) 1939-06-29
CH202587A (en) 1939-01-31
FR827944A (en) 1938-05-06

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