GB525785A - Improvements in the manufacture and illumination of transparencies and the like - Google Patents

Improvements in the manufacture and illumination of transparencies and the like

Info

Publication number
GB525785A
GB525785A GB664539A GB664539A GB525785A GB 525785 A GB525785 A GB 525785A GB 664539 A GB664539 A GB 664539A GB 664539 A GB664539 A GB 664539A GB 525785 A GB525785 A GB 525785A
Authority
GB
United Kingdom
Prior art keywords
transparencies
transparency
illumination
manufacture
reflector
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
GB664539A
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.)
ROBERT RICHARD HOARE
Original Assignee
ROBERT RICHARD HOARE
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 ROBERT RICHARD HOARE filed Critical ROBERT RICHARD HOARE
Priority to GB664539A priority Critical patent/GB525785A/en
Publication of GB525785A publication Critical patent/GB525785A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

525,785. Transparencies. HOARE, R. R. March 1, 1939, No. 6645. [Class 20 (iii)] A transparency is produced by taking a fabric having a pattern thereon, stretching it on a frame and treating it with varnish or the like in order to render it transparent. The transparency a is backed by a reflector b, light being provided by a bulb f, having a reflector e. A pivoted baffle k may be provided to vary the amount of light transmitted to the transparency. By using two of these arrangements back to back two transparencies can be illuminated by one light source.
GB664539A 1939-03-01 1939-03-01 Improvements in the manufacture and illumination of transparencies and the like Expired GB525785A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB664539A GB525785A (en) 1939-03-01 1939-03-01 Improvements in the manufacture and illumination of transparencies and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB664539A GB525785A (en) 1939-03-01 1939-03-01 Improvements in the manufacture and illumination of transparencies and the like

Publications (1)

Publication Number Publication Date
GB525785A true GB525785A (en) 1940-09-04

Family

ID=9818216

Family Applications (1)

Application Number Title Priority Date Filing Date
GB664539A Expired GB525785A (en) 1939-03-01 1939-03-01 Improvements in the manufacture and illumination of transparencies and the like

Country Status (1)

Country Link
GB (1) GB525785A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2938848A1 (en) * 2008-11-24 2010-05-28 Gilles Fourgassie Varnish composition, useful to treat silk tissue before use for watercolor on silk, comprises resin comprising non-fossilized resin, subfossilized resin, natural- or synthetic resin, non-greasy volatile solvent and mineral essence

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2938848A1 (en) * 2008-11-24 2010-05-28 Gilles Fourgassie Varnish composition, useful to treat silk tissue before use for watercolor on silk, comprises resin comprising non-fossilized resin, subfossilized resin, natural- or synthetic resin, non-greasy volatile solvent and mineral essence

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