GB355440A - Improvements in and relating to indicators operated electromagnetically - Google Patents
Improvements in and relating to indicators operated electromagneticallyInfo
- Publication number
- GB355440A GB355440A GB2051730A GB2051730A GB355440A GB 355440 A GB355440 A GB 355440A GB 2051730 A GB2051730 A GB 2051730A GB 2051730 A GB2051730 A GB 2051730A GB 355440 A GB355440 A GB 355440A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pivoted
- sheet
- flap
- indicators
- london
- 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
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
- G09F9/375—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements the position of the elements being controlled by the application of a magnetic field
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/24—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
355,440. Monogrammic signs; twoposition indicators. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, London, and GRINSTED, W. H., Under the Plane, London Lane, Bromley, Kent. July 7, 1930, No. 20517. [Classes 40 (i) and 118 (ii).] Monogrammic signs, suitable for multi-unit display indicators for use with totalizators, comprise fields of pivoted elements adapted to be swung electromagnetically into one or other of two positions. Each element consists of a flat plate 1 fitted with springs 7 and pivoted at its edge 6 to the end of a permanent magnet 5 arranged so as to induce like poles at the ends of a U-shaped core 4, 2, 4, each leg 4 being provided with a winding whereby it may be electrically magnetized to repel or attract the plate 1. A stationary sheet 10 of non-magnetic material co-operates with the pivoted flap to give the desired indications. For example, the halves of the sheet 10 may be of contrasting colours to correspond with the colours on each side of the pivoted flap. Alternatively, the sheet 10 may form a background for the indications on the two sides of the flap.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2051730A GB355440A (en) | 1930-07-07 | 1930-07-07 | Improvements in and relating to indicators operated electromagnetically |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2051730A GB355440A (en) | 1930-07-07 | 1930-07-07 | Improvements in and relating to indicators operated electromagnetically |
Publications (1)
Publication Number | Publication Date |
---|---|
GB355440A true GB355440A (en) | 1931-08-27 |
Family
ID=10147183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2051730A Expired GB355440A (en) | 1930-07-07 | 1930-07-07 | Improvements in and relating to indicators operated electromagnetically |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB355440A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5500652A (en) * | 1992-11-19 | 1996-03-19 | American Electronic Sign Company | Display element with reflective lens |
US6677922B1 (en) | 1995-12-04 | 2004-01-13 | 3M Innovative Properties Company | Display element having retroreflective surface |
-
1930
- 1930-07-07 GB GB2051730A patent/GB355440A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5500652A (en) * | 1992-11-19 | 1996-03-19 | American Electronic Sign Company | Display element with reflective lens |
US6677922B1 (en) | 1995-12-04 | 2004-01-13 | 3M Innovative Properties Company | Display element having retroreflective surface |
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