GB529743A - Improvements in the manufacture of non-symmetric reflectors for directional lightingfittings - Google Patents

Improvements in the manufacture of non-symmetric reflectors for directional lightingfittings

Info

Publication number
GB529743A
GB529743A GB1645539A GB1645539A GB529743A GB 529743 A GB529743 A GB 529743A GB 1645539 A GB1645539 A GB 1645539A GB 1645539 A GB1645539 A GB 1645539A GB 529743 A GB529743 A GB 529743A
Authority
GB
United Kingdom
Prior art keywords
reflector
reflectors
directional
lightingfittings
manufacture
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
GB1645539A
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.)
ALBERT GREENAWAY BROWN
General Electric Co PLC
Original Assignee
ALBERT GREENAWAY BROWN
General Electric Co 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 ALBERT GREENAWAY BROWN, General Electric Co PLC filed Critical ALBERT GREENAWAY BROWN
Priority to GB1645539A priority Critical patent/GB529743A/en
Publication of GB529743A publication Critical patent/GB529743A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • B21D53/883—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards reflectors
    • 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
    • F21V7/10—Construction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

529,743. Reflectors for lighting fittings. GENERAL ELECTRIC CO., Ltd., BEGGS, S. S., and BROWN, A. G. June 5, 1939, No. 16455. [Class 75 (ii)] [Also in Group XXII] Reflectors for use in directional lighting- fittings are made by spinning a dome or cone from thin material such as anodically oxidised aluminium or nickel plated copper to produce a surface of revolution which is then deformed by applying to one or both rims a constraining member such as a ring which causes the cross section of the reflector to become elongated. The reflector may be soldered to the ring. In a modification the constraining member is part of a fitting into which the reflector is placed but to which it is not attached. Specification 213,373, [Class 75 (ii)], is referred to. Reference has been directed by the Comptroller to Specification 522,043.
GB1645539A 1939-06-05 1939-06-05 Improvements in the manufacture of non-symmetric reflectors for directional lightingfittings Expired GB529743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1645539A GB529743A (en) 1939-06-05 1939-06-05 Improvements in the manufacture of non-symmetric reflectors for directional lightingfittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1645539A GB529743A (en) 1939-06-05 1939-06-05 Improvements in the manufacture of non-symmetric reflectors for directional lightingfittings

Publications (1)

Publication Number Publication Date
GB529743A true GB529743A (en) 1940-11-27

Family

ID=10077624

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1645539A Expired GB529743A (en) 1939-06-05 1939-06-05 Improvements in the manufacture of non-symmetric reflectors for directional lightingfittings

Country Status (1)

Country Link
GB (1) GB529743A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6091446A (en) 1992-01-21 2000-07-18 Walker; Bradley William Consecutive frame scanning of cinematographic film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6091446A (en) 1992-01-21 2000-07-18 Walker; Bradley William Consecutive frame scanning of cinematographic film

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