FR330781A - Improvements to Railway Signals - Google Patents

Improvements to Railway Signals

Info

Publication number
FR330781A
FR330781A FR330781DA FR330781A FR 330781 A FR330781 A FR 330781A FR 330781D A FR330781D A FR 330781DA FR 330781 A FR330781 A FR 330781A
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
Application number
Other languages
French (fr)
Inventor
John Patrick O'donnell
Ernest Copeland Irving
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JOHN PATRICK O DONNELL
Original Assignee
JOHN PATRICK O DONNELL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JOHN PATRICK O DONNELL filed Critical JOHN PATRICK O DONNELL
Application granted granted Critical
Publication of FR330781A publication Critical patent/FR330781A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L21/00—Station blocking between signal boxes in one yard
    • B61L21/04—Electrical locking and release of the route; Electrical repeat locks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR330781D 1903-03-28 1903-03-28 Improvements to Railway Signals Expired FR330781A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR330781T 1903-03-28

Publications (1)

Publication Number Publication Date
FR330781A true FR330781A (en) 1903-08-25

Family

ID=1380536

Family Applications (1)

Application Number Title Priority Date Filing Date
FR330781D Expired FR330781A (en) 1903-03-28 1903-03-28 Improvements to Railway Signals

Country Status (1)

Country Link
FR (1) FR330781A (en)

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