GB587256A - Improvements in lighting appliances - Google Patents

Improvements in lighting appliances

Info

Publication number
GB587256A
GB587256A GB2348344A GB2348344A GB587256A GB 587256 A GB587256 A GB 587256A GB 2348344 A GB2348344 A GB 2348344A GB 2348344 A GB2348344 A GB 2348344A GB 587256 A GB587256 A GB 587256A
Authority
GB
United Kingdom
Prior art keywords
screen
lamp
clips
group
engaging
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
GB2348344A
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.)
ALLAN BREWER WEARING
CLAUDE FREDERICK OWEN LISTER
Original Assignee
ALLAN BREWER WEARING
CLAUDE FREDERICK OWEN LISTER
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 ALLAN BREWER WEARING, CLAUDE FREDERICK OWEN LISTER filed Critical ALLAN BREWER WEARING
Priority to GB2348344A priority Critical patent/GB587256A/en
Publication of GB587256A publication Critical patent/GB587256A/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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/02—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for simulating daylight
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/20—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by toggle-action levers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

587,256. Lamp screens. LISTER, C. F. O., and WEARING, A. B. Nov. 24, 1944, No. 23483. [Class 75 (iv)] [Also in Group XX] A colour screen 15 for producing a "daylight" effect (see Group XX) is attached to the parabolic reflector of an electric lamp by clips 14 engaging depressions 17 which also permit.entry of air for cooling, holes 12 also being provided for this purpose. The clips each comprise a strip 18 bearing pairs of fingers 19, 20, the former engaging the edge of the screen and the latter having inturned ends 21 pivoted to a latch 22 which is rotated from the position shown, Fig. 2 to lie against the screen 10 and hold the clip in position. The screen may alternatively comprise a cylinder surrounding the lamp.
GB2348344A 1944-11-24 1944-11-24 Improvements in lighting appliances Expired GB587256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2348344A GB587256A (en) 1944-11-24 1944-11-24 Improvements in lighting appliances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2348344A GB587256A (en) 1944-11-24 1944-11-24 Improvements in lighting appliances

Publications (1)

Publication Number Publication Date
GB587256A true GB587256A (en) 1947-04-18

Family

ID=10196334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2348344A Expired GB587256A (en) 1944-11-24 1944-11-24 Improvements in lighting appliances

Country Status (1)

Country Link
GB (1) GB587256A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785291A (en) * 1952-10-18 1957-03-12 Amplex Corp Color slide adapter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785291A (en) * 1952-10-18 1957-03-12 Amplex Corp Color slide adapter

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