GB407779A - Improvements in or relating to liquid level indicating arrangements of the transparent gauge type - Google Patents

Improvements in or relating to liquid level indicating arrangements of the transparent gauge type

Info

Publication number
GB407779A
GB407779A GB3214732A GB3214732A GB407779A GB 407779 A GB407779 A GB 407779A GB 3214732 A GB3214732 A GB 3214732A GB 3214732 A GB3214732 A GB 3214732A GB 407779 A GB407779 A GB 407779A
Authority
GB
United Kingdom
Prior art keywords
gauge
liquid
liquid level
mask
relating
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
GB3214732A
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.)
CHARLES LORD BLACKBURN
Electrical Improvements Ltd
Original Assignee
CHARLES LORD BLACKBURN
Electrical Improvements Ltd
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 CHARLES LORD BLACKBURN, Electrical Improvements Ltd filed Critical CHARLES LORD BLACKBURN
Priority to GB3214732A priority Critical patent/GB407779A/en
Publication of GB407779A publication Critical patent/GB407779A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/02—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

407,779. Indicating liquid - levels. ELECTRICAL IMPROVEMENTS, Ltd., Carliol House, Newcastle-on-Tyne, and BLACKBURN, C. L., 2, Ryder Street, London. Nov. 14,1932, No. 32147. [Class 123 (i).] A wedge-shaped liquid-level gauge C of the kind described in Specifications 392,642 and 392,882 is illuminated by lamps D<2> covered by two screens F and F<1> of different colours and the gauge is viewed through a mask J, the mask and the screens being arranged at conjugate foci of an optical system formed by lenses G and H. Owing to the different refractive powers of the gauge above and below the liquid level it will appear through the mask to be illuminated by one coloured strip above the liquid level and the other below. The surfaces of the prism in contact with the liquid may be lined with mica. A prism face K may be provided on the lens G to compensate for the increase in the deviation produced when the gauge is viewed from an angle to the horizontal. A transparent plate L with ribs on either side may be provided to reflect or refract the rays for observation at a great angle to the horizontal.
GB3214732A 1932-11-14 1932-11-14 Improvements in or relating to liquid level indicating arrangements of the transparent gauge type Expired GB407779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3214732A GB407779A (en) 1932-11-14 1932-11-14 Improvements in or relating to liquid level indicating arrangements of the transparent gauge type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3214732A GB407779A (en) 1932-11-14 1932-11-14 Improvements in or relating to liquid level indicating arrangements of the transparent gauge type

Publications (1)

Publication Number Publication Date
GB407779A true GB407779A (en) 1934-03-29

Family

ID=10334006

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3214732A Expired GB407779A (en) 1932-11-14 1932-11-14 Improvements in or relating to liquid level indicating arrangements of the transparent gauge type

Country Status (1)

Country Link
GB (1) GB407779A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648521A (en) * 1968-10-23 1972-03-14 Pasquale J Amendolia Light indicator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648521A (en) * 1968-10-23 1972-03-14 Pasquale J Amendolia Light indicator

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