FR514575A - Railroad safety device - Google Patents
Railroad safety deviceInfo
- Publication number
- FR514575A FR514575A FR514575A FR514575DA FR514575A FR 514575 A FR514575 A FR 514575A FR 514575 A FR514575 A FR 514575A FR 514575D A FR514575D A FR 514575DA FR 514575 A FR514575 A FR 514575A
- Authority
- FR
- France
- Prior art keywords
- safety device
- railroad safety
- railroad
- safety
- 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
- B61L3/04—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 mechanically
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR514575T | 1920-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR514575A true FR514575A (en) | 1921-03-14 |
Family
ID=8914248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR514575A Expired FR514575A (en) | 1920-04-28 | 1920-04-28 | Railroad safety device |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR514575A (en) |
-
1920
- 1920-04-28 FR FR514575A patent/FR514575A/en not_active Expired
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