GB191410733A - Electric Light Switches Shining in the Dark. - Google Patents

Electric Light Switches Shining in the Dark.

Info

Publication number
GB191410733A
GB191410733A GB191410733DA GB191410733A GB 191410733 A GB191410733 A GB 191410733A GB 191410733D A GB191410733D A GB 191410733DA GB 191410733 A GB191410733 A GB 191410733A
Authority
GB
United Kingdom
Prior art keywords
dark
switch
shining
substance
electric 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
Inventor
Giorgia Santo Stefano De Cerda
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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB191410733A publication Critical patent/GB191410733A/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
    • H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
    • H01H9/185—Fluorescent or phosphorescent symbols or distinguishing marks

Landscapes

  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

10,733. Santo Stefano Della Cerda, G. June 5,1913, [Convention date]. Indicators.-A switch is rendered visible in the dark by means of a ring m fitted frictionally on the switch cover l and containing a luminous substance or coated with phosphorescent varnish, the outer face p of the ring being of transparent substance. The Specification as open to inspection under Section 91 (3) (a) describes also a disk, formed of, or coated with, a luminous or phosphorescent substance, placed under the cover of the switch,. this being of glass. This subject-matter does not appear in the Specification as accepted.
GB191410733D 1913-06-05 1914-05-01 Electric Light Switches Shining in the Dark. Expired GB191410733A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT191410733X 1913-06-05

Publications (1)

Publication Number Publication Date
GB191410733A true GB191410733A (en) 1915-03-04

Family

ID=32587826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191410733D Expired GB191410733A (en) 1913-06-05 1914-05-01 Electric Light Switches Shining in the Dark.

Country Status (1)

Country Link
GB (1) GB191410733A (en)

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