GB510448A - Improvements in or relating to reading and working lamps - Google Patents

Improvements in or relating to reading and working lamps

Info

Publication number
GB510448A
GB510448A GB312238A GB312238A GB510448A GB 510448 A GB510448 A GB 510448A GB 312238 A GB312238 A GB 312238A GB 312238 A GB312238 A GB 312238A GB 510448 A GB510448 A GB 510448A
Authority
GB
United Kingdom
Prior art keywords
reflector
wall
lamp
ceiling
pedestal
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
GB312238A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB312238A priority Critical patent/GB510448A/en
Publication of GB510448A publication Critical patent/GB510448A/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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/002—Table lamps, e.g. for ambient lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • 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
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

510,448. Pedestal, ceiling, and wall lamps. WITT, G., DE. Feb. 1, 1938, No. 3122. [Classes 75 (ii) and 75 (iv)] In pedestal, ceiling and wall lamps of the kind in which the light source is vertically adjustable in relation to a reflector so that the area of illumination may be varied, the source and its mounting are flexibly connected with a counterweight in the form of a ring, tassel, or like handpull device. Fig. 1 shows a reading-lamp comprising a reflector b supported above a bowl or vase q on the neck of which is seated the rounded rim r of a tapered tube e, the electric bulb d being carried by a plunger c which is slidable in the tube e and is connected to a ring counterweight n by a ball chain u passing over the rim r. In the overhead lamp shown in Fig. 2, a double conical reflecter m, m<1> is employed, the bulb d being adjustably supported, so as to provide varying degrees of downward and upward illumination, by a cord k passing over pulleys and carrying a weighted tassel n. Fig. 3 shows a similar construction applied to a wall lamp, a half reflector m, m' being secured to a wall bracket s.
GB312238A 1938-02-01 1938-02-01 Improvements in or relating to reading and working lamps Expired GB510448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB312238A GB510448A (en) 1938-02-01 1938-02-01 Improvements in or relating to reading and working lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB312238A GB510448A (en) 1938-02-01 1938-02-01 Improvements in or relating to reading and working lamps

Publications (1)

Publication Number Publication Date
GB510448A true GB510448A (en) 1939-08-01

Family

ID=9752323

Family Applications (1)

Application Number Title Priority Date Filing Date
GB312238A Expired GB510448A (en) 1938-02-01 1938-02-01 Improvements in or relating to reading and working lamps

Country Status (1)

Country Link
GB (1) GB510448A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3706110A1 (en) * 1987-02-25 1988-06-01 Valledor Jesus Vara Horizontal luminaire for fluorescent lamps
DE3821260A1 (en) * 1988-06-23 1989-12-28 Ludwig Gmbh Geb LAMP
WO2012038399A1 (en) * 2010-09-21 2012-03-29 Zumtobel Lighting Gmbh Optical system and illuminator for direct and indirect illumination
USD744157S1 (en) * 2014-03-18 2015-11-24 Osram Gmbh LED lamp lens

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3706110A1 (en) * 1987-02-25 1988-06-01 Valledor Jesus Vara Horizontal luminaire for fluorescent lamps
DE3821260A1 (en) * 1988-06-23 1989-12-28 Ludwig Gmbh Geb LAMP
WO2012038399A1 (en) * 2010-09-21 2012-03-29 Zumtobel Lighting Gmbh Optical system and illuminator for direct and indirect illumination
USD744157S1 (en) * 2014-03-18 2015-11-24 Osram Gmbh LED lamp lens

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