GB339748A - Improvements in or relating to electric lighting - Google Patents

Improvements in or relating to electric lighting

Info

Publication number
GB339748A
GB339748A GB3388429A GB3388429A GB339748A GB 339748 A GB339748 A GB 339748A GB 3388429 A GB3388429 A GB 3388429A GB 3388429 A GB3388429 A GB 3388429A GB 339748 A GB339748 A GB 339748A
Authority
GB
United Kingdom
Prior art keywords
tube
switch
fuse
relating
electrode
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
GB3388429A
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.)
Individual
Original Assignee
Individual
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
Priority to BE374670D priority Critical patent/BE374670A/xx
Application filed by Individual filed Critical Individual
Priority to GB3388429A priority patent/GB339748A/en
Priority to FR704813D priority patent/FR704813A/en
Publication of GB339748A publication Critical patent/GB339748A/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"
    • H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements

Abstract

339,748. Lawn, J. Nov. 7, 1929. Vacuum tubes.-A glow. discharge tube of the type having one internal electrode D and a second external electrode or capacity element C is arranged across the terminals of a, switch or fuse and is visible, the tube glowing when the switch is open or when the fuse blows, and thus indicating the whereabouts of the switch in the dark or which of a number of fuses has blown. The tube may be mounted on the insulating block d, Fig. 4, carrying the fuse wire F or on an insulating block c, Fig. 3, at the back of a switch plate a, the electrode 0 acting as a reflector at the back of the tube. The tube is filled with neon, helium or other rare gas.
GB3388429A 1929-11-07 1929-11-07 Improvements in or relating to electric lighting Expired GB339748A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE374670D BE374670A (en) 1929-11-07
GB3388429A GB339748A (en) 1929-11-07 1929-11-07 Improvements in or relating to electric lighting
FR704813D FR704813A (en) 1929-11-07 1930-10-31 Improvements in electric lighting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3388429A GB339748A (en) 1929-11-07 1929-11-07 Improvements in or relating to electric lighting

Publications (1)

Publication Number Publication Date
GB339748A true GB339748A (en) 1930-12-18

Family

ID=10358695

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3388429A Expired GB339748A (en) 1929-11-07 1929-11-07 Improvements in or relating to electric lighting

Country Status (3)

Country Link
BE (1) BE374670A (en)
FR (1) FR704813A (en)
GB (1) GB339748A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189095A (en) * 1985-07-12 1987-10-14 Sydney Stanley Bosley Fuse with indicating device
DE3723435A1 (en) * 1986-07-15 1988-01-21 Toshiba Kawasaki Kk Gas-discharge lamp and a device which uses said lamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189095A (en) * 1985-07-12 1987-10-14 Sydney Stanley Bosley Fuse with indicating device
GB2189095B (en) * 1985-07-12 1989-07-26 Sydney Stanley Bosley Fuse
DE3723435A1 (en) * 1986-07-15 1988-01-21 Toshiba Kawasaki Kk Gas-discharge lamp and a device which uses said lamp

Also Published As

Publication number Publication date
FR704813A (en) 1931-05-27
BE374670A (en)

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