GB308987A - Method of, and apparatus for, displaying rows of letters, signs or figures - Google Patents

Method of, and apparatus for, displaying rows of letters, signs or figures

Info

Publication number
GB308987A
GB308987A GB10263/29A GB1026329A GB308987A GB 308987 A GB308987 A GB 308987A GB 10263/29 A GB10263/29 A GB 10263/29A GB 1026329 A GB1026329 A GB 1026329A GB 308987 A GB308987 A GB 308987A
Authority
GB
United Kingdom
Prior art keywords
platform
cylinder
screw
reel
pin
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
GB10263/29A
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 GB308987A publication Critical patent/GB308987A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00Advertising or display means not otherwise provided for
    • G09F19/12Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18Advertising 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

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Displays For Variable Information Using Movable Means (AREA)

Abstract

308,987. Baagoe, A. J. April 2, 1928, [Convention date]. Optical-projection apparatus, applications of; cylinders, rotating; reel and endless web apparatus; reel and non-endless web apparatus; elements moving always in one plane, rotating.- Optical-projection apparatus in which the beam is thrown on to an inclined screen so as to be viewed from a direction substantially perpendicular to the axis of the beam comprises a rigid cylinder 29 held by clips 30 in a platform 26 rotatably mounted on a screw 20. The screw threads are engaged by a pin 32 which is slid outwardly by an incline 33 when the platform reaches the top. The platform then falls down the screw by spring pressure or by gravity till the pin 32 is pushed inwards by a stop 34, when the rotary upward motion is repeated. The light from the lamp 14, after passing through a condenser 15 and the cylinder 29, is reflected upwardly by a mirror 2 through an objective 16. The indications on the cylinder may be arranged spirally or circularly. The inclined screen is opaque or translucent, and gives a distorted image, or it may comprise a mirror reflecting the beam on to a vertical screen. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the employment, of an endless film or of a disc bearing the display matter, or of a moving band carrying opaque letters, &c. illuminated from the front. This subject-matter does not appear in the Specification as accepted.
GB10263/29A 1928-04-02 1929-04-02 Method of, and apparatus for, displaying rows of letters, signs or figures Expired GB308987A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK308987X 1928-04-02

Publications (1)

Publication Number Publication Date
GB308987A true GB308987A (en) 1930-05-15

Family

ID=8150476

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10263/29A Expired GB308987A (en) 1928-04-02 1929-04-02 Method of, and apparatus for, displaying rows of letters, signs or figures

Country Status (1)

Country Link
GB (1) GB308987A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609726A (en) * 1950-06-06 1952-09-09 Florindo J Perillo Multislide automatic turntable projector
US5345250A (en) * 1988-09-29 1994-09-06 Canon Kabushiki Kaisha Data processing system and apparatus and display system with image information memory control
WO2020065038A1 (en) 2018-09-27 2020-04-02 Saint-Gobain Glass France Electrically controllable device having variable diffusion by liquid crystals, and method for same
FR3086771A1 (en) 2018-09-27 2020-04-03 Saint-Gobain Glass France ELECTRICALLY CONTROLLABLE DEVICE WITH VARIABLE DIFFUSION BY LIQUID CRYSTALS AND METHOD THEREOF.
WO2021198596A1 (en) 2020-04-01 2021-10-07 Saint-Gobain Glass France Electrically controllable device having variable diffusion by liquid crystals, and method for same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609726A (en) * 1950-06-06 1952-09-09 Florindo J Perillo Multislide automatic turntable projector
US5345250A (en) * 1988-09-29 1994-09-06 Canon Kabushiki Kaisha Data processing system and apparatus and display system with image information memory control
WO2020065038A1 (en) 2018-09-27 2020-04-02 Saint-Gobain Glass France Electrically controllable device having variable diffusion by liquid crystals, and method for same
FR3086771A1 (en) 2018-09-27 2020-04-03 Saint-Gobain Glass France ELECTRICALLY CONTROLLABLE DEVICE WITH VARIABLE DIFFUSION BY LIQUID CRYSTALS AND METHOD THEREOF.
WO2021198596A1 (en) 2020-04-01 2021-10-07 Saint-Gobain Glass France Electrically controllable device having variable diffusion by liquid crystals, and method for same
FR3108990A1 (en) 2020-04-01 2021-10-08 Saint-Gobain Glass France ELECTRO-CONTROLLED DEVICE WITH VARIABLE DIFFUSION
US12001111B2 (en) 2020-04-01 2024-06-04 Saint-Gobain Glass France Electrically controllable device having variable diffusion by liquid crystals, and method for same

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