GB172592A - Improvements in connection with miner's or other electric lamps - Google Patents

Improvements in connection with miner's or other electric lamps

Info

Publication number
GB172592A
GB172592A GB29489/21A GB2948921A GB172592A GB 172592 A GB172592 A GB 172592A GB 29489/21 A GB29489/21 A GB 29489/21A GB 2948921 A GB2948921 A GB 2948921A GB 172592 A GB172592 A GB 172592A
Authority
GB
United Kingdom
Prior art keywords
miner
connection
electric lamps
bush
battery
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
GB29489/21A
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
Priority to GB29489/21A priority Critical patent/GB172592A/en
Publication of GB172592A publication Critical patent/GB172592A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Primary Cells (AREA)

Abstract

172,592. Hailwood, E. A. Aug. 25, 1920. Battery lamps; holders. -In miners' or other battery lamps a screwthreaded terminal B<1> of the battery is provided with an insulating-sleeve J<1> upon which is mounted a bush J adapted to receive the bulb and electrically connected to the other terminal B<2>, The circuit is made or broken by screwing the bulb or the bush down or up. A protecting-glass G is secured to the bush by a ring R.
GB29489/21A 1920-08-25 1920-08-25 Improvements in connection with miner's or other electric lamps Expired GB172592A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB29489/21A GB172592A (en) 1920-08-25 1920-08-25 Improvements in connection with miner's or other electric lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29489/21A GB172592A (en) 1920-08-25 1920-08-25 Improvements in connection with miner's or other electric lamps

Publications (1)

Publication Number Publication Date
GB172592A true GB172592A (en) 1921-11-25

Family

ID=10292347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29489/21A Expired GB172592A (en) 1920-08-25 1920-08-25 Improvements in connection with miner's or other electric lamps

Country Status (1)

Country Link
GB (1) GB172592A (en)

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