FR377923A - Improvements made to semaphores - Google Patents
Improvements made to semaphoresInfo
- Publication number
- FR377923A FR377923A FR377923DA FR377923A FR 377923 A FR377923 A FR 377923A FR 377923D A FR377923D A FR 377923DA FR 377923 A FR377923 A FR 377923A
- Authority
- FR
- France
- Prior art keywords
- semaphores
- improvements made
- 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
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/12—Visible signals
- B61L5/14—Form signals, e.g. semaphore arms
- B61L5/16—Local operating mechanisms for form signals
- B61L5/161—Local operating mechanisms for form signals using electromotive driving means
- B61L5/163—Driving mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR377923T | 1907-04-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR377923A true FR377923A (en) | 1907-09-19 |
Family
ID=1424310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR377923D Expired FR377923A (en) | 1907-04-23 | 1907-04-23 | Improvements made to semaphores |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR377923A (en) |
-
1907
- 1907-04-23 FR FR377923D patent/FR377923A/en not_active Expired
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