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 figuresInfo
- 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
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
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.
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)
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 |
-
1929
- 1929-04-02 GB GB10263/29A patent/GB308987A/en not_active Expired
Cited By (7)
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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