GB234942A - Improvements in or relating to indicators for electric signalling systems and the like - Google Patents
Improvements in or relating to indicators for electric signalling systems and the likeInfo
- Publication number
- GB234942A GB234942A GB781024A GB781024A GB234942A GB 234942 A GB234942 A GB 234942A GB 781024 A GB781024 A GB 781024A GB 781024 A GB781024 A GB 781024A GB 234942 A GB234942 A GB 234942A
- Authority
- GB
- United Kingdom
- Prior art keywords
- semaphore
- contact
- indicators
- operated
- lamps
- 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
- G08B5/24—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
- G08B5/28—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 with hinged flap or arm
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
234,942. Bullough, R. March 27, 1924. Falling-flap and other release indicators.-In a signalling system wherein the origin of the call is indicated by one of a number of pivoted semaphores arranged in a casing and electromagnetically released when a bell is rung, a contact, associated with one or each semaphore, operates auxiliary visual signalling apparatus, such as lamps. A semaphore d, Figs. 1 and 2, carrying a weight A, is provided with a contact B, which when the semaphore is released engages a pin h on the semaphore resetting bar j and closes the circuit of auxiliary signalling apparatus. The contact B which is attached at one end to the semaphore arm, is connected to a spring c which at its other end is attached to a terminal. As shown in Fig. 3, when one of the indicators m<1> - - m<4> is operated by its corresponding push n<1> - - n<4>, the indicator m<5> is also operated to close the circuit of the local and distant lamps k<1>, k<2>. The auxiliary signal is extinguished when the indicators are reset. Each semaphore may be provided with a contact B or the semaphores may be grouped, and each group provided with an additional semaphore having a contact. In the latter arrangement differently coloured lamps are associated with each group. The Provisional Specification states that the apparatus may be operated by a door or window contact so as to function as a burglar alarm and that the auxiliary signal may comprise a bell or buzzer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB781024A GB234942A (en) | 1924-03-27 | 1924-03-27 | Improvements in or relating to indicators for electric signalling systems and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB781024A GB234942A (en) | 1924-03-27 | 1924-03-27 | Improvements in or relating to indicators for electric signalling systems and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB234942A true GB234942A (en) | 1925-06-11 |
Family
ID=9840168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB781024A Expired GB234942A (en) | 1924-03-27 | 1924-03-27 | Improvements in or relating to indicators for electric signalling systems and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB234942A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2538146A1 (en) * | 1982-12-20 | 1984-06-22 | Parack Christian | Alarm device with localised sound and visual indication without relay |
-
1924
- 1924-03-27 GB GB781024A patent/GB234942A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2538146A1 (en) * | 1982-12-20 | 1984-06-22 | Parack Christian | Alarm device with localised sound and visual indication without relay |
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