FR563847A - Railway alarm whistle - Google Patents
Railway alarm whistleInfo
- Publication number
- FR563847A FR563847A FR563847DA FR563847A FR 563847 A FR563847 A FR 563847A FR 563847D A FR563847D A FR 563847DA FR 563847 A FR563847 A FR 563847A
- Authority
- FR
- France
- Prior art keywords
- alarm whistle
- railway alarm
- railway
- whistle
- alarm
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
- B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
- B61L3/10—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using current passing between devices along the route and devices on the vehicle or train
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR563847T | 1923-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR563847A true FR563847A (en) | 1923-12-14 |
Family
ID=8945343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR563847D Expired FR563847A (en) | 1923-03-15 | 1923-03-15 | Railway alarm whistle |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR563847A (en) |
-
1923
- 1923-03-15 FR FR563847D patent/FR563847A/en not_active Expired
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