GB295581A - Projection screen for the display of announcements - Google Patents

Projection screen for the display of announcements

Info

Publication number
GB295581A
GB295581A GB23186/28A GB2318628A GB295581A GB 295581 A GB295581 A GB 295581A GB 23186/28 A GB23186/28 A GB 23186/28A GB 2318628 A GB2318628 A GB 2318628A GB 295581 A GB295581 A GB 295581A
Authority
GB
United Kingdom
Prior art keywords
frame
screen
building
secured
display
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
GB23186/28A
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
Publication of GB295581A publication Critical patent/GB295581A/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
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

295,581. Geyling, R., and Planer, P. Aug. 13, 1927, [Convention date]. Projection screens.-A non-collapsable frame, fixed or movably secured to a building, carries a projection screen adapted to be stored at one side of the frame in a rolled-up, folded, or other collapsed condition. As shown, the frame 2 of a screen 1 is pivoted so that it may lie on the roof of a building when not in use, or may be turned to the position shown when it is to display the image from a projector in a window 4. The frame is provided with balancing levers 3. A modification is described in which the frame is pivoted along one vertical edge to a house so that it may be swung across a street and be secured to an opposite house when in use, the screen being carried by a roller at the bottom of the frame and having one edge secured to a transverse beam which may be moved vertically in the frame to raise and lower the screen. The frame may be attached flat and immovably to the front of a building.
GB23186/28A 1927-08-13 1928-08-11 Projection screen for the display of announcements Expired GB295581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT295581X 1927-08-13

Publications (1)

Publication Number Publication Date
GB295581A true GB295581A (en) 1929-10-03

Family

ID=3671033

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23186/28A Expired GB295581A (en) 1927-08-13 1928-08-11 Projection screen for the display of announcements

Country Status (1)

Country Link
GB (1) GB295581A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4847298A (en) * 1971-10-16 1973-07-05
US3961839A (en) * 1972-06-29 1976-06-08 Brobst Clarence O Indoor-outdoor image projection system
CN107145032A (en) * 2017-05-10 2017-09-08 钱娟娟 VR Architectural exhibition systems

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4847298A (en) * 1971-10-16 1973-07-05
US3961839A (en) * 1972-06-29 1976-06-08 Brobst Clarence O Indoor-outdoor image projection system
CN107145032A (en) * 2017-05-10 2017-09-08 钱娟娟 VR Architectural exhibition systems
CN107145032B (en) * 2017-05-10 2019-08-02 山东联创建筑设计有限公司 VR Architectural exhibition system

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