GB249046A - Improvements in and relating to illuminating appliances - Google Patents

Improvements in and relating to illuminating appliances

Info

Publication number
GB249046A
GB249046A GB3013325A GB3013325A GB249046A GB 249046 A GB249046 A GB 249046A GB 3013325 A GB3013325 A GB 3013325A GB 3013325 A GB3013325 A GB 3013325A GB 249046 A GB249046 A GB 249046A
Authority
GB
United Kingdom
Prior art keywords
relating
fitting
illuminating
illuminating appliances
appliances
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
GB3013325A
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.)
Holophane Ltd
Original Assignee
Holophane Ltd
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 Holophane Ltd filed Critical Holophane Ltd
Priority to GB3013325A priority Critical patent/GB249046A/en
Publication of GB249046A publication Critical patent/GB249046A/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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

249,046. Holophane, Ltd., and Stroud, E. Nov. 28,1925. Mounting electric lamps in lanterns.- In an illuminating appliance an electric lamp bulb is carried by a platform 16 having bent-up tongues 17 adapted to slide within a tubular shadesupporting fitting 11 and is clamped in any desired position for focussing purposes by screws 18 passing through slots 19 in the fitting 11 and engaged by nuts 20.
GB3013325A 1925-11-28 1925-11-28 Improvements in and relating to illuminating appliances Expired GB249046A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3013325A GB249046A (en) 1925-11-28 1925-11-28 Improvements in and relating to illuminating appliances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3013325A GB249046A (en) 1925-11-28 1925-11-28 Improvements in and relating to illuminating appliances

Publications (1)

Publication Number Publication Date
GB249046A true GB249046A (en) 1926-03-18

Family

ID=10302825

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3013325A Expired GB249046A (en) 1925-11-28 1925-11-28 Improvements in and relating to illuminating appliances

Country Status (1)

Country Link
GB (1) GB249046A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447923A (en) * 1944-08-26 1948-08-24 Holophane Co Inc Lighting system and lighting units for use therein
EP1828674A2 (en) * 2004-12-03 2007-09-05 Acuity Brands, Inc. Luminaire reflector having improved prism transition

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447923A (en) * 1944-08-26 1948-08-24 Holophane Co Inc Lighting system and lighting units for use therein
EP1828674A2 (en) * 2004-12-03 2007-09-05 Acuity Brands, Inc. Luminaire reflector having improved prism transition
EP1828674A4 (en) * 2004-12-03 2008-08-13 Acuity Brands Inc Luminaire reflector having improved prism transition
US7866855B2 (en) 2004-12-03 2011-01-11 ABL IP Holding LLC. Luminaire reflector having improved prism transition

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