GB164496A - Improvements in or connected with miners' safety and other electric hand lamps - Google Patents

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

Info

Publication number
GB164496A
GB164496A GB716020A GB716020A GB164496A GB 164496 A GB164496 A GB 164496A GB 716020 A GB716020 A GB 716020A GB 716020 A GB716020 A GB 716020A GB 164496 A GB164496 A GB 164496A
Authority
GB
United Kingdom
Prior art keywords
miners
safety
oldham
electric hand
hand 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
GB716020A
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 GB716020A priority Critical patent/GB164496A/en
Publication of GB164496A publication Critical patent/GB164496A/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
    • 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

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

Abstract

164,496. Oldham, O., (trading as Oldham & Son), Oldham, G., and Oldham, J. March 9, 1920. Reflector and lens holders.-In a miner's or like electric lamp, the lens o and reflector p are secured by a screwed ring n which is engaged by a locking-hook r pivoted on the lamp casing at r<1> and adapted to be sealed at r<3>.
GB716020A 1920-03-09 1920-03-09 Improvements in or connected with miners' safety and other electric hand lamps Expired GB164496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB716020A GB164496A (en) 1920-03-09 1920-03-09 Improvements in or connected with miners' safety and other electric hand lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB716020A GB164496A (en) 1920-03-09 1920-03-09 Improvements in or connected with miners' safety and other electric hand lamps

Publications (1)

Publication Number Publication Date
GB164496A true GB164496A (en) 1921-06-09

Family

ID=9827750

Family Applications (1)

Application Number Title Priority Date Filing Date
GB716020A Expired GB164496A (en) 1920-03-09 1920-03-09 Improvements in or connected with miners' safety and other electric hand lamps

Country Status (1)

Country Link
GB (1) GB164496A (en)

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