GB639067A - Improvements in or relating to electromagnetic indicators - Google Patents

Improvements in or relating to electromagnetic indicators

Info

Publication number
GB639067A
GB639067A GB2608847A GB2608847A GB639067A GB 639067 A GB639067 A GB 639067A GB 2608847 A GB2608847 A GB 2608847A GB 2608847 A GB2608847 A GB 2608847A GB 639067 A GB639067 A GB 639067A
Authority
GB
United Kingdom
Prior art keywords
relating
group xxxviii
indicator
electromagnetic indicators
akroyd
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
GB2608847A
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.)
Oldham Crompton Batteries Ltd
Original Assignee
Oldham Crompton Batteries 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 Oldham Crompton Batteries Ltd filed Critical Oldham Crompton Batteries Ltd
Priority to GB2608847A priority Critical patent/GB639067A/en
Publication of GB639067A publication Critical patent/GB639067A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/32—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving rectilinearly

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

639,067. Electric tests. OLDHAM & SON, Ltd., and AKROYD, H. Sept. 25, 1947, No. 26088. Drawings to Specification. [Class 37] [Also in Group XXXVIII] A two - position indicator (see Group XXXVIII) is included in the charging circuit of each of a number of batteries for miners' lamps. When a battery is fully charged, the current falls to a value at which a solenoid forming part of the associated indicator can no longer hold an indicating member out of the display position against gravitation.
GB2608847A 1947-09-25 1947-09-25 Improvements in or relating to electromagnetic indicators Expired GB639067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2608847A GB639067A (en) 1947-09-25 1947-09-25 Improvements in or relating to electromagnetic indicators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2608847A GB639067A (en) 1947-09-25 1947-09-25 Improvements in or relating to electromagnetic indicators

Publications (1)

Publication Number Publication Date
GB639067A true GB639067A (en) 1950-06-21

Family

ID=10238169

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2608847A Expired GB639067A (en) 1947-09-25 1947-09-25 Improvements in or relating to electromagnetic indicators

Country Status (1)

Country Link
GB (1) GB639067A (en)

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