GB191316257A - An Improved Electric Miner's Lamp with Firedamp Indicator. - Google Patents

An Improved Electric Miner's Lamp with Firedamp Indicator.

Info

Publication number
GB191316257A
GB191316257A GB191316257DA GB191316257A GB 191316257 A GB191316257 A GB 191316257A GB 191316257D A GB191316257D A GB 191316257DA GB 191316257 A GB191316257 A GB 191316257A
Authority
GB
United Kingdom
Prior art keywords
lamp
reflector
case
stud
contact
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
Jean Charles Rigaux
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 GB191316257A publication Critical patent/GB191316257A/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
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

16.257. Rigaux, J. C. July 15. No Patent granted (Sealing fee not paid). Thermometers.-A fire-damp indicator for a miner's electric lamp is provided with a collapsible device 21 arranged above a flexible diaphragm 20, these parts being. covered with platinum sponge. In the form shown, a case 1 for an accumulator has an ebonite cover 5 carrying two contacts 6, 7 on its underside and a clamp 8 which engages a conducting-sleeve 9 provided with a spring-pressed contact 10 for holding one end of a lamp 15. The sleeve 9 is insulated from a reflector 14 closing the lower end of a glass cylinder 27 and the other end of the lamp is held by a socket 10<a> insulated from an upper reflector 17. The socket 10<a> carries a contact 18 upon which normally rests a contact stud 19 connected by means of the device 21, of copper &c., to a diaphragm 20, of similar material, which closes the reflector 17 hermetically. The reflector 17 is filled with an expansible fluid, and encloses the stud 19 and a shunt resistance 25. The case 1 is provided with cage bars 28 which support a ring 29 into which screws a top having a number of gauze-covered openings 32 for admission of fire-damp. A switch 35 projects through the case. When the sponge becomes heated, the fluid expands, the stud 19 is lifted and the current passes through the resistance 25 so that the light is dimmed. According to the Provisional Specification, the case may be provided with a magnetic lock.
GB191316257D 1913-07-15 1913-07-15 An Improved Electric Miner's Lamp with Firedamp Indicator. Expired GB191316257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191316257T 1913-07-15

Publications (1)

Publication Number Publication Date
GB191316257A true GB191316257A (en) 1914-07-15

Family

ID=32645637

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191316257D Expired GB191316257A (en) 1913-07-15 1913-07-15 An Improved Electric Miner's Lamp with Firedamp Indicator.

Country Status (1)

Country Link
GB (1) GB191316257A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9863622B1 (en) * 2010-11-17 2018-01-09 Light & Motion Industries Underwater lights for divers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9863622B1 (en) * 2010-11-17 2018-01-09 Light & Motion Industries Underwater lights for divers

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