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GB246986A - An improved electric lamp signalling device - Google Patents

An improved electric lamp signalling device

Info

Publication number
GB246986A
GB246986A GB54025A GB54025A GB246986A GB 246986 A GB246986 A GB 246986A GB 54025 A GB54025 A GB 54025A GB 54025 A GB54025 A GB 54025A GB 246986 A GB246986 A GB 246986A
Authority
GB
United Kingdom
Prior art keywords
signalling device
electric lamp
improved electric
arm
lamp signalling
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
GB54025A
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.)
James Jones Co LLC
Original Assignee
James Jones Co LLC
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 James Jones Co LLC filed Critical James Jones Co LLC
Priority to GB54025A priority Critical patent/GB246986A/en
Publication of GB246986A publication Critical patent/GB246986A/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
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0414—Arrangement of electric circuit elements in or on lighting devices the elements being switches specially adapted to be used with portable lighting devices

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

246,986. Jones, J., and Walters, D. July 6, 1925. Gravity switches.-A lamp signalling device for use by an officer controlling traffic or for similar purposes comprises two lamps C mounted on the front and back of the wrist and a switch B mounted on the arm so that when the arm is raised or lowered the lamp circuit is automatically made or broken, the switch consisting of two contacts N, N' bridged by a gravity operated bullet-shaped plunger H sliding in a cylindrical casing C<1>.
GB54025A 1925-07-06 1925-07-06 An improved electric lamp signalling device Expired GB246986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB54025A GB246986A (en) 1925-07-06 1925-07-06 An improved electric lamp signalling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54025A GB246986A (en) 1925-07-06 1925-07-06 An improved electric lamp signalling device

Publications (1)

Publication Number Publication Date
GB246986A true GB246986A (en) 1926-02-11

Family

ID=9706140

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54025A Expired GB246986A (en) 1925-07-06 1925-07-06 An improved electric lamp signalling device

Country Status (1)

Country Link
GB (1) GB246986A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207555A (en) * 1987-07-31 1989-02-01 Inertia Switch Ltd Inertia sensor switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207555A (en) * 1987-07-31 1989-02-01 Inertia Switch Ltd Inertia sensor switch
GB2207555B (en) * 1987-07-31 1992-02-05 Inertia Switch Ltd Inertia sensor

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