FR494007A - Improvements to railway signals - Google Patents
Improvements to railway signalsInfo
- Publication number
- FR494007A FR494007A FR494007DA FR494007A FR 494007 A FR494007 A FR 494007A FR 494007D A FR494007D A FR 494007DA FR 494007 A FR494007 A FR 494007A
- Authority
- FR
- France
- Prior art keywords
- railway signals
- railway
- signals
- 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 |
|---|---|---|---|
| FR494007T | 1917-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR494007A true FR494007A (en) | 1919-08-28 |
Family
ID=1529695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR494007D Expired FR494007A (en) | 1917-12-26 | 1917-12-26 | Improvements to railway signals |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR494007A (en) |
-
1917
- 1917-12-26 FR FR494007D patent/FR494007A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR494007A (en) | Improvements to railway signals | |
| FR496236A (en) | Improvements to frequency meters | |
| FR487725A (en) | Improvements to railway signals | |
| FR491497A (en) | Improvements to railway signals | |
| FR513757A (en) | Improvements to warning signals for motorists | |
| FR482912A (en) | Improvements to railway signals | |
| FR488024A (en) | Improvements to ships | |
| FR489613A (en) | Improvements made to wheel chocks | |
| FR488745A (en) | Improvements to car suspensions | |
| FR487615A (en) | Improvements at railway crossings | |
| FR510216A (en) | Improvements to phonographs | |
| FR490425A (en) | Improvements to gear trains | |
| FR491512A (en) | Improvements to ships | |
| FR490279A (en) | Improvements to switches for railway tracks | |
| FR488817A (en) | Improvements to changes for railway track | |
| FR487818A (en) | Improvements to phonographs | |
| FR494524A (en) | Improvements to devices for making light signals | |
| FR515539A (en) | Improvements to elastic wheels for vehicles | |
| FR485492A (en) | Improvements to locknuts | |
| FR491126A (en) | Improvements to recording tachometers | |
| FR489042A (en) | Improvements to railway sleepers | |
| FR494014A (en) | Improvements to sleepers with plates or bells for railway tracks | |
| FR489718A (en) | Improvements to recording devices | |
| FR519015A (en) | Improvements to light signals | |
| FR492259A (en) | Improvements to lanterns for hand signals |