GB501822A - Improved electrical indicator - Google Patents

Improved electrical indicator

Info

Publication number
GB501822A
GB501822A GB13775/37A GB1377537A GB501822A GB 501822 A GB501822 A GB 501822A GB 13775/37 A GB13775/37 A GB 13775/37A GB 1377537 A GB1377537 A GB 1377537A GB 501822 A GB501822 A GB 501822A
Authority
GB
United Kingdom
Prior art keywords
switch
improved electrical
electrical indicator
tube
light
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
GB13775/37A
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.)
IND INV S Ltd
Original Assignee
IND INV S 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 IND INV S Ltd filed Critical IND INV S Ltd
Publication of GB501822A publication Critical patent/GB501822A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/165—Indicators for switching condition, e.g. "on" or "off" comprising numbered dials

Landscapes

  • Switch Cases, Indication, And Locking (AREA)

Abstract

501,822. Indicators for switches. INDUSTRIAL INVENTIONS, Ltd. May 18, 1937, No. 13775. Void. Convention date, May 26, 1936. [Class 38 (v)] A switch such as an ordinary tumbler switch 10 has a discharge tube 15 such as a neon lamp as an indicator. The switch may be single pole and the tube 15 connected in parallel with it so as to light up when the switch is open, or in series with it so as to light up when the switch is closed. Or the switch may be a double pole one and the tube arranged accordingly.
GB13775/37A 1936-05-26 1937-05-18 Improved electrical indicator Expired GB501822A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU501822X 1936-05-26

Publications (1)

Publication Number Publication Date
GB501822A true GB501822A (en) 1939-03-02

Family

ID=3736676

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13775/37A Expired GB501822A (en) 1936-05-26 1937-05-18 Improved electrical indicator

Country Status (1)

Country Link
GB (1) GB501822A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215131A (en) * 1988-02-12 1989-09-13 Philip Nicholas Derbyshire Electrical switches
GB2251060B (en) * 1990-12-17 1994-02-16 Andreas Charalambous Georgiou An illuminating electric light switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215131A (en) * 1988-02-12 1989-09-13 Philip Nicholas Derbyshire Electrical switches
GB2251060B (en) * 1990-12-17 1994-02-16 Andreas Charalambous Georgiou An illuminating electric light switch

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