GB539472A - Improvements in of relating to street lighting fittings - Google Patents

Improvements in of relating to street lighting fittings

Info

Publication number
GB539472A
GB539472A GB5662/40A GB566240A GB539472A GB 539472 A GB539472 A GB 539472A GB 5662/40 A GB5662/40 A GB 5662/40A GB 566240 A GB566240 A GB 566240A GB 539472 A GB539472 A GB 539472A
Authority
GB
United Kingdom
Prior art keywords
annular member
disc
apertures
relating
street lighting
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
GB5662/40A
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB5662/40A priority Critical patent/GB539472A/en
Publication of GB539472A publication Critical patent/GB539472A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S13/00—Non-electric lighting devices or systems employing a point-like light source; Non-electric lighting devices or systems employing a light source of unspecified shape

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

539,472. Street lamps. FERRANTI, Ltd., and WATKISS, J. H. March 29, 1940, No. 5662. [Class 75 (iv)] A street lamp for war-time use has a screen comprising an opaque annular member d having above it an opaque disc g, which overlaps the edge of the annular member, and the annular member is formed with radial apertures f, the outer ends of which extend slightly beyond the edge of the disc. The apertures may be replaced by V-shaped recesses, and the recesses or the apertures may be formed in the disc instead of in the annular member. A collar i, secured to the annular member, reflects the light falling on it in a nearly horizontal direction.
GB5662/40A 1940-03-29 1940-03-29 Improvements in of relating to street lighting fittings Expired GB539472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5662/40A GB539472A (en) 1940-03-29 1940-03-29 Improvements in of relating to street lighting fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5662/40A GB539472A (en) 1940-03-29 1940-03-29 Improvements in of relating to street lighting fittings

Publications (1)

Publication Number Publication Date
GB539472A true GB539472A (en) 1941-09-11

Family

ID=9800275

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5662/40A Expired GB539472A (en) 1940-03-29 1940-03-29 Improvements in of relating to street lighting fittings

Country Status (1)

Country Link
GB (1) GB539472A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213576A (en) * 1987-12-11 1989-08-16 Michael Andrew Cunningham Improvements relating to road lighting appliances
DE4330982A1 (en) * 1993-09-13 1995-03-16 Acl Lichttechnik Gmbh Luminaire with front cover

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213576A (en) * 1987-12-11 1989-08-16 Michael Andrew Cunningham Improvements relating to road lighting appliances
GB2213576B (en) * 1987-12-11 1991-09-25 Michael Andrew Cunningham Improvements relating to road lighting appliances
DE4330982A1 (en) * 1993-09-13 1995-03-16 Acl Lichttechnik Gmbh Luminaire with front cover

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