GB224705A - Improvements in or connected with miners' and other electric safety lamps - Google Patents

Improvements in or connected with miners' and other electric safety lamps

Info

Publication number
GB224705A
GB224705A GB27062/23A GB2706223A GB224705A GB 224705 A GB224705 A GB 224705A GB 27062/23 A GB27062/23 A GB 27062/23A GB 2706223 A GB2706223 A GB 2706223A GB 224705 A GB224705 A GB 224705A
Authority
GB
United Kingdom
Prior art keywords
miners
bulb
lamps
electric safety
safety lamps
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
GB27062/23A
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.)
GEORGE HENRY DARBY
Oldham Crompton Batteries Ltd
Original Assignee
GEORGE HENRY DARBY
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 GEORGE HENRY DARBY, Oldham Crompton Batteries Ltd filed Critical GEORGE HENRY DARBY
Priority to GB27062/23A priority Critical patent/GB224705A/en
Publication of GB224705A publication Critical patent/GB224705A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L2/00—Systems of electric lighting devices
    • 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
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
    • F21V25/04—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken breaking the electric circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

224,705. Oldham & Son, Ltd., and Darby, G. H. Oct. 29, 1923. Battery lamps; cut-out arrangements. - A device for breaking the electric circuit in miners' safety lamps when the bulb is fractured comprises a contact q adapted to be held in tension against a contact k, to close the circuit, by means of a wire s embodying a spring t and a loop u by which it is engaged with the pip v of the bulb a. The bulb-holder b is mounted in an insulating block c secured beneath the cover f of the battery receptacle.
GB27062/23A 1923-10-29 1923-10-29 Improvements in or connected with miners' and other electric safety lamps Expired GB224705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB27062/23A GB224705A (en) 1923-10-29 1923-10-29 Improvements in or connected with miners' and other electric safety lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27062/23A GB224705A (en) 1923-10-29 1923-10-29 Improvements in or connected with miners' and other electric safety lamps

Publications (1)

Publication Number Publication Date
GB224705A true GB224705A (en) 1924-11-20

Family

ID=10253543

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27062/23A Expired GB224705A (en) 1923-10-29 1923-10-29 Improvements in or connected with miners' and other electric safety lamps

Country Status (1)

Country Link
GB (1) GB224705A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581078A (en) * 1943-11-04 1952-01-01 Cathodeon Ltd Safety device for aircraft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581078A (en) * 1943-11-04 1952-01-01 Cathodeon Ltd Safety device for aircraft

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