GB1274827A - Adjustable lamp holder - Google Patents

Adjustable lamp holder

Info

Publication number
GB1274827A
GB1274827A GB299471A GB299471A GB1274827A GB 1274827 A GB1274827 A GB 1274827A GB 299471 A GB299471 A GB 299471A GB 299471 A GB299471 A GB 299471A GB 1274827 A GB1274827 A GB 1274827A
Authority
GB
United Kingdom
Prior art keywords
housing
slots
secured
socket
detents
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
GB299471A
Inventor
William Lawrence Graeme Roe
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.)
Thorn Electrical Industries Ltd
Original Assignee
Thorn Electrical Industries 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 Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd
Priority to GB299471A priority Critical patent/GB1274827A/en
Priority to DE19727202294 priority patent/DE7202294U/de
Publication of GB1274827A publication Critical patent/GB1274827A/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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing

Abstract

1,274,827. Lamps. THORN ELECTRICAL INDUSTRIES Ltd. 22 Jan., 1971, No. 2994/71. Heading F4R. A lamp socket 14 which is axially adjustable along a tubular housing 13 can be locked in any one of a plurality of axial locations by means of a ratchet 15 and detent 16, two of each being employed in the preferred embodiment. The ratchets, which are formed in the limbs 17 of a U-shaped bracket 18 secured to the socket, each consist of a main elongated slot 20 with subsidiary slots 21 extending laterally on either side thereof, whilst the detents, which are formed at opposite ends of a U-shaped leaf spring 24 secured to the housing, each consist of a pair of lugs 25 adapted to engage in the slots 21. Studs 26 secured to the ends of the leaf spring project through the slots 20 and through apertures 27 in the housing and form means for releasing the detents. The socket is biased by a coil spring 31, and its movements within the tube are guided by the engagement of the limbs 17 in grooves (not shown) in the wall of the housing. The housing carries a reflector (not shown) and may be pivoted to a wall or ceiling or fitted to an overhead electricity distribution track.
GB299471A 1971-01-22 1971-01-22 Adjustable lamp holder Expired GB1274827A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB299471A GB1274827A (en) 1971-01-22 1971-01-22 Adjustable lamp holder
DE19727202294 DE7202294U (en) 1971-01-22 1972-01-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB299471A GB1274827A (en) 1971-01-22 1971-01-22 Adjustable lamp holder

Publications (1)

Publication Number Publication Date
GB1274827A true GB1274827A (en) 1972-05-17

Family

ID=9749933

Family Applications (1)

Application Number Title Priority Date Filing Date
GB299471A Expired GB1274827A (en) 1971-01-22 1971-01-22 Adjustable lamp holder

Country Status (2)

Country Link
DE (1) DE7202294U (en)
GB (1) GB1274827A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002068A1 (en) * 1980-01-15 1981-07-23 H Schrader Support for an interchangeable reflector lamp,particularly for a slide projector
DE3109894A1 (en) * 1981-03-14 1982-09-30 Rudolf Dipl.-Wirtsch.-Ing. 3548 Arolsen Wilke Light fixture
WO1984000598A1 (en) * 1982-07-21 1984-02-16 Manville Service Corp Adjustable lamp socket
WO1997012176A1 (en) * 1995-09-28 1997-04-03 Andrew Terry Neal Lamp fitting
GB2458765A (en) * 2008-04-01 2009-10-07 Yulin Wu Bulb holder with ratchet and cam based locking apparatus
WO2010044718A1 (en) * 2008-10-15 2010-04-22 Michael Engstrand Improvements in or relating to adjusting of a light source
WO2024017705A1 (en) * 2022-07-22 2024-01-25 Signify Holding B.V. Depth control systems for recessed luminaires

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010013654B4 (en) * 2010-04-01 2017-11-09 Siteco Beleuchtungstechnik Gmbh Luminaire with displaceable socket holder
DE102010013655B4 (en) * 2010-04-01 2017-11-09 Siteco Beleuchtungstechnik Gmbh Luminaire with led holder

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002068A1 (en) * 1980-01-15 1981-07-23 H Schrader Support for an interchangeable reflector lamp,particularly for a slide projector
DE3109894A1 (en) * 1981-03-14 1982-09-30 Rudolf Dipl.-Wirtsch.-Ing. 3548 Arolsen Wilke Light fixture
WO1984000598A1 (en) * 1982-07-21 1984-02-16 Manville Service Corp Adjustable lamp socket
WO1997012176A1 (en) * 1995-09-28 1997-04-03 Andrew Terry Neal Lamp fitting
GB2321301A (en) * 1995-09-28 1998-07-22 Andrew Terry Neal Lamp fitting
GB2458765A (en) * 2008-04-01 2009-10-07 Yulin Wu Bulb holder with ratchet and cam based locking apparatus
GB2458765B (en) * 2008-04-01 2011-06-08 Yulin Wu Bulb holder locking apparatus
WO2010044718A1 (en) * 2008-10-15 2010-04-22 Michael Engstrand Improvements in or relating to adjusting of a light source
WO2024017705A1 (en) * 2022-07-22 2024-01-25 Signify Holding B.V. Depth control systems for recessed luminaires

Also Published As

Publication number Publication date
DE7202294U (en) 1972-05-10

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees