GB648418A - Improvements in and relating to photographic light units - Google Patents

Improvements in and relating to photographic light units

Info

Publication number
GB648418A
GB648418A GB10503/48A GB1050348A GB648418A GB 648418 A GB648418 A GB 648418A GB 10503/48 A GB10503/48 A GB 10503/48A GB 1050348 A GB1050348 A GB 1050348A GB 648418 A GB648418 A GB 648418A
Authority
GB
United Kingdom
Prior art keywords
socket
lamp
relating
photographic light
light units
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
GB10503/48A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB648418A publication Critical patent/GB648418A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Connecting Device With Holders (AREA)

Abstract

648,418. Lamp holders. BRITISH THOMSON-HOUSTON CO., Ltd. April 15, 1948, No. 10503. Convention date, April 15, 1947. [Class 38 (i)] [Also in Group XL (a)] A lamp holder comprises a bayonet cap socket 19 fixed in the centre of a base 1 for mounting one lamp 2, and a plurality of sockets, as shown three 16, 17, 18, assembled on the base 1 around the socket 19 for mounting another lamp 3, socket 18 being spaced further away from the other two sockets 16, 17. An insulating sleeve 21 surrounds the socket 19.
GB10503/48A 1947-04-15 1948-04-15 Improvements in and relating to photographic light units Expired GB648418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US741632A US2549330A (en) 1947-04-15 1947-04-15 Photographic light unit

Publications (1)

Publication Number Publication Date
GB648418A true GB648418A (en) 1951-01-03

Family

ID=24981522

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10503/48A Expired GB648418A (en) 1947-04-15 1948-04-15 Improvements in and relating to photographic light units

Country Status (3)

Country Link
US (1) US2549330A (en)
GB (1) GB648418A (en)
NL (2) NL72934C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825795A (en) * 1953-11-25 1958-03-04 Andrew F Henninger Flashtube mounting structure
US2794906A (en) * 1954-06-16 1957-06-04 Harold E Edgerton Gaseous-discharge apparatus
DE958804C (en) * 1954-07-15 1957-02-21 Dr Arthur Gewehr Lighting equipment for photographic purposes
US5452188A (en) * 1992-04-14 1995-09-19 Green; Timothy M. Modular strobe bar
US9195117B2 (en) * 2009-01-29 2015-11-24 William Connor Delzell Modified system and method for obtaining photographic and/or videographic images

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1374832A (en) * 1919-09-27 1921-04-12 Connecticut Telephone & Elec Vacuum-tube base
US1677752A (en) * 1921-01-27 1928-07-17 Harry A Douglas Electric reflecting lamp
US2201853A (en) * 1938-01-28 1940-05-21 Gen Electric Socket structure
US2205672A (en) * 1938-10-13 1940-06-25 David F Sawyer Lighting element and fixture therefor
US2277698A (en) * 1941-05-13 1942-03-31 Herbert E Grier Flash-photography apparatus

Also Published As

Publication number Publication date
NL139917B (en)
US2549330A (en) 1951-04-17
NL72934C (en)

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