GB146615A - 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
GB146615A
GB146615A GB915719A GB915719A GB146615A GB 146615 A GB146615 A GB 146615A GB 915719 A GB915719 A GB 915719A GB 915719 A GB915719 A GB 915719A GB 146615 A GB146615 A GB 146615A
Authority
GB
United Kingdom
Prior art keywords
miners
safety
electric hand
hand lamps
oldham
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
GB915719A
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 GB915719A priority Critical patent/GB146615A/en
Publication of GB146615A publication Critical patent/GB146615A/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)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

146,615. Oldham, G., and Oldham, J. April 10, 1919. Lens-holders. - The lens 9 of an electric battery lamp is held in position by means of a ring 8 which can be locked by a pivoted catch 12, holes 16 being provided for a cord and seal.
GB915719A 1919-04-10 1919-04-10 Improvements in or connected with miners' safety and other electric hand lamps Expired GB146615A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB915719A GB146615A (en) 1919-04-10 1919-04-10 Improvements in or connected with miners' safety and other electric hand lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB915719A GB146615A (en) 1919-04-10 1919-04-10 Improvements in or connected with miners' safety and other electric hand lamps

Publications (1)

Publication Number Publication Date
GB146615A true GB146615A (en) 1920-07-12

Family

ID=9866489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB915719A Expired GB146615A (en) 1919-04-10 1919-04-10 Improvements in or connected with miners' safety and other electric hand lamps

Country Status (1)

Country Link
GB (1) GB146615A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2536593A (en) * 1945-12-05 1951-01-02 Edward E Ciha Keyhole illuminator
US3510644A (en) * 1967-08-04 1970-05-05 William E Braese Plastic ring assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2536593A (en) * 1945-12-05 1951-01-02 Edward E Ciha Keyhole illuminator
US3510644A (en) * 1967-08-04 1970-05-05 William E Braese Plastic ring assembly

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