GB202703A - Improvements in or relating to portable lamps or lanterns - Google Patents

Improvements in or relating to portable lamps or lanterns

Info

Publication number
GB202703A
GB202703A GB13929/22A GB1392922A GB202703A GB 202703 A GB202703 A GB 202703A GB 13929/22 A GB13929/22 A GB 13929/22A GB 1392922 A GB1392922 A GB 1392922A GB 202703 A GB202703 A GB 202703A
Authority
GB
United Kingdom
Prior art keywords
container
bulb
lamp
plano
frosted
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
GB13929/22A
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 GB13929/22A priority Critical patent/GB202703A/en
Publication of GB202703A publication Critical patent/GB202703A/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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

202,703. Harrison, H. T. May 17, 1922. Globes; lenses.-In a miner's and like portable lamp with a concentrated-filament lamp-bulb enclosed in a glass container formed with annular prisms, or an annular lens of plano-convex section, or a combination of both, a light-diffusing body or surface is interposed in the path of the emitted rays. In one form, the container a has a cylindrical interior, and has the plano-convex portion c<2> arranged between two prisms c, c<1> on the exterior, and the internal or external surface of the container is roughened or frosted. In other forms, the lamp-bulb, or a glass cylinder arranged between the bulb and the container, is roughened or frosted, or the cylinder is made of translucent material.
GB13929/22A 1922-05-17 1922-05-17 Improvements in or relating to portable lamps or lanterns Expired GB202703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB13929/22A GB202703A (en) 1922-05-17 1922-05-17 Improvements in or relating to portable lamps or lanterns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB13929/22A GB202703A (en) 1922-05-17 1922-05-17 Improvements in or relating to portable lamps or lanterns

Publications (1)

Publication Number Publication Date
GB202703A true GB202703A (en) 1923-08-17

Family

ID=10031938

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13929/22A Expired GB202703A (en) 1922-05-17 1922-05-17 Improvements in or relating to portable lamps or lanterns

Country Status (1)

Country Link
GB (1) GB202703A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2593901A (en) * 1948-10-15 1952-04-22 Gen Electric Signal light

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2593901A (en) * 1948-10-15 1952-04-22 Gen Electric Signal light

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