GB350814A - Improvements in or relating to annunciators - Google Patents
Improvements in or relating to annunciatorsInfo
- Publication number
- GB350814A GB350814A GB25042/30A GB2504230A GB350814A GB 350814 A GB350814 A GB 350814A GB 25042/30 A GB25042/30 A GB 25042/30A GB 2504230 A GB2504230 A GB 2504230A GB 350814 A GB350814 A GB 350814A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamps
- switches
- relays
- over
- rows
- 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
- 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
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Audible And Visible Signals (AREA)
Abstract
350,814. Electric selective signalling systems. LIGHTER, I. J., 229, West 42nd Street, New York, U.S.A. Aug. 21, 1930, No. 25042. Convention date, Oct. 1, 1929. [Class 40 (i).] A two-digit signalling system comprises a switch-board F with rows A.. D of switches, a receiver E with two groups of signal lamps &c., one corresponding to the rows A .. D and the other consisting of lamps &c. 1 .. 16 each connected in multiple to the corresponding switches in the rows, and a distributer R which successively completes circuits for relays A<1> .. D<1> over M .. P and for lamps A .. D over M<1> .. P<1>. The successive operation of relays completes circuits for lamps 1 .. 16 over operated switches on board F. In a modification, the circuits of lamps A .. D are completed over contacts of relays A<1>, Bl instead of directly by the distributer. Manually-operated switches may, as shown, be inserted in the leads from the controller R to the lamps A .. D and relays A<1> .. D<1>. These switches must be closed before a call can be signalled.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US350814XA | 1929-10-01 | 1929-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB350814A true GB350814A (en) | 1931-06-18 |
Family
ID=21880514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25042/30A Expired GB350814A (en) | 1929-10-01 | 1930-08-21 | Improvements in or relating to annunciators |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR701496A (en) |
| GB (1) | GB350814A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115171325B (en) * | 2022-06-30 | 2024-05-14 | 帝森克罗德集团有限公司 | Automatic alarm electric fire extinguishing controller |
-
1930
- 1930-08-21 GB GB25042/30A patent/GB350814A/en not_active Expired
- 1930-09-01 FR FR701496D patent/FR701496A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR701496A (en) | 1931-03-17 |
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