GB512975A - Improvements in electrical apparatus for indicating liquid levels - Google Patents

Improvements in electrical apparatus for indicating liquid levels

Info

Publication number
GB512975A
GB512975A GB1869638A GB1869638A GB512975A GB 512975 A GB512975 A GB 512975A GB 1869638 A GB1869638 A GB 1869638A GB 1869638 A GB1869638 A GB 1869638A GB 512975 A GB512975 A GB 512975A
Authority
GB
United Kingdom
Prior art keywords
resistance
bar
operated
float
cam
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
GB1869638A
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.)
Evershed and Vignoles Ltd
Original Assignee
Evershed and Vignoles 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 Evershed and Vignoles Ltd filed Critical Evershed and Vignoles Ltd
Priority to GB1869638A priority Critical patent/GB512975A/en
Publication of GB512975A publication Critical patent/GB512975A/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
    • G01F23/30—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 floats
    • G01F23/64—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 floats of the free float type without mechanical transmission elements
    • G01F23/68—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 floats of the free float type without mechanical transmission elements using electrically actuated indicating means

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

512,975. Variable resistances. EVERSHED & VIGNOLES, Ltd., and MARCHMENT, W. T. June 23, 1938, No. 18696. [Class 37] [Also in Group XXXVIII] A float-operated variable resistance for controlling a liquid level indicator comprises a ball float 3 of metal or metallized wood or cork, which is normally out of contact with a resistance 4 but is movable laterally across the surface of the liquid into direct contact with the resistance by a vertical bar 9 pivotally mounted on links 11 and operated by an electromagnet 15. The float may be made entirely of insulating material and may co-operate with a series of spaced switches connected to the resistance. The bar 9 may be operated mechanically by a cam or Bowden wire ; alternatively the bar may be pivoted about a vertical axis and have a cam-shaped cross section or a circular cross section pivoted eccentrically.
GB1869638A 1938-06-23 1938-06-23 Improvements in electrical apparatus for indicating liquid levels Expired GB512975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1869638A GB512975A (en) 1938-06-23 1938-06-23 Improvements in electrical apparatus for indicating liquid levels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1869638A GB512975A (en) 1938-06-23 1938-06-23 Improvements in electrical apparatus for indicating liquid levels

Publications (1)

Publication Number Publication Date
GB512975A true GB512975A (en) 1939-09-29

Family

ID=10116839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1869638A Expired GB512975A (en) 1938-06-23 1938-06-23 Improvements in electrical apparatus for indicating liquid levels

Country Status (1)

Country Link
GB (1) GB512975A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187847A (en) * 1986-03-14 1987-09-16 Veglia Borletti Srl A device for detecting the level of a liquid in a tank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187847A (en) * 1986-03-14 1987-09-16 Veglia Borletti Srl A device for detecting the level of a liquid in a tank
GB2187847B (en) * 1986-03-14 1990-01-10 Veglia Borletti Srl A device for detecting the level of a liquid in a tank

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